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But Jürgen Klopp's men delivered a glorious comeback at Anfield.

Jürgen Klopp celebrates with Divock Origi as Liverpool reaches the final (Image: (Photo by Clive Brunskill/Getty Images))

It is five years to the day since Liverpool delivered one of its best ever European nights.

The Reds had been beaten 3-0 at the Nou Camp in the Champions League semi-final first leg, with Lionel Messi and former striker Luis Suárez in fine form.

Liverpool was written off ahead of the return at Anfield and its task was made even harder with Mohamed Salah and Roberto Firmino both out injured.

With 10 minutes to play, Barcelona switched off from a corner and Liverpool capitalized.

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Alexander-Arnold's quick thinking saw Liverpool catch the visitors out and Origi was the first to react to sweep his effort into the net.

Barca had won 3-0 at the Nou Camp with Messi at his best.Jordan Henderson and Lionel Messi shake hands before the match (Image: (Photo by Jan Kruger - UEFA/UEFA via Getty Images))1 of 9The Reds took the lead on the night after seven minutes.

Jordan Henderson's effort had been saved but the rebound fell perfectly for Divock Origi.Divock Origi opens the scoring for Liverpool at Anfield (Image: (Photo by Andrew Powell/Liverpool FC via Getty Images))2 of 9Jürgen Klopp brought Georginio Wijnaldum on at half-time and the Dutchman had a great impact.

He had made it 2-0 on the night just seconds earlier before his soaring header.Georginio Wijnaldum heads in to score Liverpool's third (Image: (Photo by Visionhaus/Getty Images))3 of 9