The Uruguay international marked his Premier League return from a 10-match ban with two goals against Sunderland on Sunday.
"[Suarez has] just given us more confidence," Lucas told the club's official website. "The squad that we had without him was a good one, but with him back in it, we'll be even better. He's one of the best in the world."
The 26-year-old, who tried to orchestrate a move out of Anfield in the summer, is expected to be in the team for this Saturday's clash against Crystal Palace.