The Reds keeper was disappointed after his side’s 1-1 draw with Lyon on Wednesday.
“I do not accept that not going through will be a disaster for the club,” he said.
“We have been in the Champions League now for several years, one failure is not a disaster.
“Not many teams have reached the semi-finals twice and two finals – including a title victory – in the last few seasons.
“It can happen again, we get closer to our real form with every game.
“Any team would miss the quality of the players who are injured at the moment, but we have others who can play and who can produce the right performances to get us out of this mess.”
“We must show heart, passion and belief,” he added.
“If anyone can do this, Liverpool can. But now it (qualification) is not in our own hands, it does not only depend on what we do.
“Now it is very, very difficult for us. But we must show strong character and fight right to the end. We know we have enough good players to sort this out.”
