"I'm sure the fans are going to believe it's up to us to score and allow them to. Realistically, it's a very steep mountain for us, but it's important to believe," explained the young right-back at a press conference.
"It's a very small possibility, but the possibility is there. We have to go out without fear," added the Englishman.
The 'reds' face the encounter with the 3-0 boxed in the Camp Nou, and the plague of three injuries that has burdened the team. Neither Mohamed Salah, Roberto Firmino nor Naby Keita will be in Anfield on Tuesday, where Liverpool will seek their second consecutive final in the competition.
"We train with different line-ups and different players in different positions. It's something we've practiced. Two of our top scorers are out, but that's also an opportunity for the rest of us to become heroes and if we can turn the result around, whoever the scorer is, his name will always be remembered," reflected Alexander-Arnold.