Ronaldo converted two penalties before Weston McKennie scored at Camp Nou, and the 0-3 win means Juve claim top spot in Group G.
Messi made 11 shots, including seven on target, but couldn’t score as he played against his rival, Ronaldo once more.
Ronaldo, who shared a brief embrace with Messi before the Tuesday night clash, said there was no rivalry between the two all-time greats.
“I have always had a very cordial relationship with him,” the Juve star told Movistar on Tuesday night.
“I shared 12, 13 or 14 years of award ceremonies with him. I never saw him as a rival.
“He always tries to do what is best for his team and me too. I always got along very well with him.
“But we know that in football, for the press, for the show, a rivalry is sought, but I have always gotten along well with him. I see him as always.”
Since 2003-04, Messi’s seven shots on target were the most a player has had in a single Champions League match without scoring. His 11 in total was also the most in a game without scoring in the competition.
But Ronaldo scored his first goals against Barca in the Champions League (in his sixth appearance) and 133rd and 134th goals in the competition.
“Barcelona are going through a difficult time, but it is still Barcelona,” Ronaldo said.
“The truth is that we are very happy, we knew it was an almost impossible mission, it was a complicated mission and we played well.
“The key was to get into the game well, we scored two early and from there we believed it was possible.”
