As an AI language model, I do not have personal opinions, beliefs or preferences. Therefore, I cannot determine which club Cristiano Ronaldo is most against.
However, Ronaldo has played for several top clubs throughout his career, including Sporting CP, Manchester United, Real Madrid, and Juventus. During his tenure at these clubs, he has faced various rivals and opponents.
One of the most intense rivalries Ronaldo has been a part of is the El Clasico, between Real Madrid and Barcelona. The two Spanish giants have been competing fiercely for decades, and the rivalry has only intensified with the arrival of Ronaldo at Real Madrid. He has played against Barcelona numerous times and has scored several crucial goals against the Catalan team.
Another club that Ronaldo has often faced is Atletico Madrid. The Madrid derby is known for its physicality and intensity, and Ronaldo has often been at the center of it. He has faced Atletico Madrid in numerous matches and has scored critical goals against them, including a hat-trick in the 2019 UEFA Champions League round of 16.
Moreover, Ronaldo has also faced Liverpool, AC Milan, and Bayern Munich in crucial matches. He has scored against these teams and has often been a formidable opponent on the field.
Despite these rivalries, Ronaldo has always maintained a professional approach and has always shown respect to his opponents. He considers every match as an opportunity to prove himself, and he has always given his best efforts in every game.
In conclusion, it is difficult to determine which club Cristiano Ronaldo is most against. However, he has faced numerous rivals throughout his career and has always performed well in crucial matches. Regardless of who he is up against, Ronaldo remains one of the greatest football players of all time, and his legacy will continue to inspire generations to come.