Reports have suggested Real will use Robinho in part exchange in their bid to sign Ronaldo from Manchester United.
Brazil international Robinho is determined not to be involved in any deal after returning to Madrid for pre-season training.
"Now, I only have in my head Madrid," Robinho told AS.
"I am not prepared to be involved in any operation for a move for Cristiano Ronaldo."
Robinho has also been linked with a move to Chelsea following his compatriot Luiz Felipe Scolari's appointment as manager.
But he is not looking to move to the Premier League, saying: "I hope to stay at Real Madrid this year."