Benfica striker Nuno Gomes says he hopes that the ref is strong against Ronaldo tonight otherwise he could hurt them.
"I have seen the Middlesbrough match and I saw the way he fell. It was not a penalty. He is very good at doing that.
"I just hope that the referee in our game will not be conned by him. To us, the referee will be key. He must stop Ronaldo doing these things."
While defender Luisao said: "In Portugal everyone knows how Cristiano Ronaldo plays. He is a genius with the ball but on many times occasions he abuses this quality through his faults.
"I am a player very clear in what I say. I do not want players who are searching to do these things on the field. Because that is not a spectacle."