The Reds need victory over Debrecen to keep their Champions League hopes alive.
Benitez said: "If anyone can do it, Gerrard can. But the whole team believe it is possible."
The Spaniard was in a confident mood for his pre-match press conference where once again he was asked that if Liverpool fail to qualify, will that be the end of his Liverpool career. He laughed and responded: "No, I don't think so."