"The main thing for us is we know we'll play the second game at Anfield. This could be an important factor for us," he added.
"It's an amazing atmosphere in our stadium when we play in Europe, and we know how good our fans are at putting pressure on other teams.
"But I know it will be the first game which can make things possible for us. Last season we paid because we lost a late goal in Benfica and that cost us in the second leg."