Lehmann, who has kept four clean sheets in his six games while deputising for Almunia in the past six weeks, said: "When I'm under pressure in big games, you can rely on me.
"I've played four or five games in a row, we will see how it goes on. With a goalless result, a keeper has not done much wrong. In my case, I have to think from game to game. A draw against AC Milan was a little disappointing but we did not concede."