On Saturday at Anfield, fan groups like Spirit of Shankly took a stand by distributing leaflets urging fellow supporters to protest against ticket prices by avoiding spending money inside the stadium.

Just a few days later, Arne Slot might find it beneficial to distribute his own flyers before the match, reminiscent of Lord Kitchener’s iconic 1914 recruitment call.

“Liverpool FC wants you,” the flyers could declare, featuring Slot’s face in a nod to the famous World War I posters.

At this moment, perhaps more than any time in the past decade, Liverpool needs the magic of a classic Anfield night. To overturn a two-goal deficit against Paris Saint-Germain, the reigning European champions, every ounce of support will be crucial.

While protesting against ticket prices is justified and fans should persist until the owners listen, Tuesday night requires a shift in focus. As the sun sets over L4, creating an electrifying and intimidating atmosphere is paramount, a hallmark that has seen many top teams falter at Anfield.

Arne Slot’s Liverpool were well beaten in the first leg of their quarter-final last week, with Paris Saint-Germain running out 2-0 winners

Fan sentiment has not always been with Slot this season but he will need Anfield more than ever to keep Liverpool’s Champions League hopes alive

Analyzing the upcoming second leg against Luis Enrique’s side, PSG are favorites and likely to win nine times out of ten. Skeptics might wonder, “What if PSG scores early?” or “What if they dominate with a flurry of goals?” But what if they don’t? What if it turns into another legendary night at Anfield?

‘The fans will probably be the most important factor, together with our performance,’ said captain Virgil van Dijk. ‘I’ve been very lucky to experience those nights where the connection between the fans and the performance has been unbelievable.

‘We need something very special to happen otherwise we will have no chance. If we play like we did in Paris, then we will have no chance anyway in my opinion. There is an opportunity on Tuesday to come up with a good game plan and fight for it for 90-plus minutes. I am really looking forward to it. It’s a privilege to be in the quarter-finals regardless. We shouldn’t take that for granted. We have to remember we are Liverpool. We have to make it a memorable night.’

They did so against Barcelona in 2019, when the Reds were 3-0 down from the Nou Camp leg and thumped Lionel Messi, Luis Suarez and Co 4-0. That was a bigger mountain to climb but arguably Jurgen Klopp’s Liverpool were better-equipped to scale to the summit back then.

Slot has spent the build-up to this match telling his team how they have scored at least twice in 36 of the last 50 home matches, and that’s the bare minimum needed tonight. The dressing-room leaders Van Dijk, Andy Robertson and Mohamed Salah will have told tales about the famous comeback against the Catalans. The newer boys, like Dominik Szoboszlai, are also drumming up belief.

Liverpool’s player-of-the-season-elect said: ‘My message to (the fans) is that we are going to go all in. I can speak for all the players. We want it so bad. We work for it so badly and in one game anything can happen at Anfield.’

Slot, along the same theme, said: ‘Yes there is a belief we can do special things tomorrow. But we have to be very, very, very special tomorrow to achieve that as we are playing against the champions of Europe. That makes the task more complicated but not impossible.’

Pressure has eased slightly on Slot after a swing weekend in the Premier League saw them climb four points clear of Chelsea in the race for Champions League football. Finishing fifth will not mask the fact it has been a rotten campaign but it at least puts a positive spin on things. Beating PSG, however, completely starts to change the complexion and will give the fans a team to be proud of once more.

Liverpool need a fightback almost on par with the 2019 semi-final, when they turned around a 3-0 first-leg deficit against Barcelona

Rio Ngumoha is just 17 but every week is making a stronger case to be thrown in from the start

Slot’s gamble on a back five in Paris last week did not pay off – will he stick with it tonight?

As everyone in the building acknowledges, it will not be easy. Getting the ball off them is hard enough, as the likes of Vitinha and Joao Neves are majestic to watch. The front three are almost impossible to track due to their fluidity, while full backs Achraf Hakimi and Nuno Mendes are frightening for any team to defend against. But as seen in last year’s run to becoming champions, they do concede chances.

Visiting boss Enrique, a Champions League winner with Barcelona and PSG as a manager, is worried that this match could be ‘a trap’. Liverpool must pounce on those frailties – if any appear – and be efficient. Slot has some big selection calls to make. Does he stick with the 4-3-3 he returned to at the weekend or return to the 4-2-2-2 he has applied recently, or even the more defensive 5-2-3 he used in Paris?

Who starts at right back, the exciting and fast Jeremie Frimpong or more experienced and defensively sound Joe Gomez? Does Salah, benched in France, start? What about 17-year-old Rio Ngumoha, who was man of the match against Fulham on Saturday?

Luck will need to be on Liverpool’s side. If either team replicates their performance of last week, there will only be one winner. But as Slot says, a comeback is not impossible. Why not believe?