Ronaldo attended a pre-arranged gathering for his 30th birthday hours after playing in Real's humiliating loss at Vicente Calderon, with a number of the club's fans protesting against the party at training on Monday.
After a banner reading 'Your laughter, our shame' was held up by supporters, agent Jorge Mendes jumped to his client's defence before ex-Real and Portugal star Figo also weighed in to back his former international team-mate.
"Those who question @Cristiano 's passion for Real @realmadrid and his professionalism, completely ignore his history and his character," read a tweet from the FIFA presidential candidate.
Along with Ronaldo, Real players including Marcelo, James Rodriguez and Keylor Navas were all photographed at the party in Madrid.
