The 26-year-old was jeered in Portugal`s 4-0 Euro 2012 qualifying win over Cyprus in September, in which a number of fans shouted the name `Messi`, referring to Barcelona`s Lionel Messi, with whom the Madrid player has a well-documented rivalry.
Prior to the first leg of the Euro 2012 play-offs against Bosnia and Herzegovina, Ronaldo was greeted at the airport by chants in praise of the Barca man, before responding to laser-pointing fans with an obscene gesture.
"It is the same thing if they sing that kind of chant or if they stay quiet," he told TF1. "Those chants do not provoke me, nor do they make me change my way of playing.
"I do not care about them."
Ronaldo then played down his nomination for the 2011 Fifa Ballon d`Or award, stressing his sole focus is club matters.
"I do not know if I will win the award or not," he added. "Madrid are doing well, I am doing well, too, and my national team will go the European Championship. So I am happy.
"The Ballon d`Or is not my priority, nor does it concern me now."
The Portugal international also said there is no truth to reports linking him with a move to cash-rich Paris Saint-Germain, saying: "I know they are a great club, but I am not leaving Madrid. I am sure about that."