"I have to say that for the whole 90 minutes at Elland Road, the fans were singing and pushing our team up a level," said Dudek.
"They were brilliant. In fact, the players even said to each other after the game how wonderful our supporters had been. They were even greater than they normally are.
"That match at Leeds, and the one against Roma, show just how good we can be when we have that special unity with our supporters for the whole game.
"If our fans can help us again on Wednesday, then there will be another fantastic atmosphere at Anfield, and hopefully, another fantastic result for us."