"He has been a great help to me - I spend a lot of time with him and Anderson off the pitch.
"I was told before I came here Ronaldo was the best player in the world. He is right at the top of his game and scoring so many goals. Without doubt he IS the best in the world."
Nani is convinced it is the collective power rather than the individuals which will make the difference.
He added: "Ronaldo and Wayne Rooney are such important players but it is not just those two, everyone contributes and that collective force is what sets us apart."
And while the FA Cup will be the priority today there is a different dream for Nani.
He said: "To win the title is everything I want, that and the Champions League. To do that would be a dream come true."