The Portuguese forward managed to score one of the best goals he has ever scored in the competition to break the deadlock in the second half.
Leonardo Bonucci sent a beautiful ball over the top and Ronaldo volleyed an unstoppable first time effort past David de Gea.
But Ronaldo’s former club would come roaring back, and would take all three points when Juan Mata and an Alex Sandro own-goal gave the visitors all three points.
Despite the result, Ronaldo was happy with the goal that he scored.
“I saw the replay in the dressing room,” he told Viasport Football, per Football-Italia.net. “I didn’t realise it was a fantastic goal, but I did a good movement and I kick the ball strong.
“I was happy with the goal, but of course I’m a little bit disappointed because we should win the game with three or four goals. Manchester didn’t do much, they had two chances on set pieces.
“I know English teams are always looking for set pieces. We will learn from our mistakes and we are still top of the group, so it’s all good.”
Ronaldo went on to make some comments on the game itself, and, it hasn’t seemed to go down well with Man United fans.
Ronaldo stated after the game that his side should have won by three or four goals and that Man United didn’t do much during the game.
“We are a little bit disappointed because we should have won the game easily, by three or four goals.
“Manchester [United] didn’t do much. They created two chances, two set-pieces. The English teams are always looking for set-pieces.
“But we’ll learn from our mistakes.”
.@Cristiano: – We should've won the game easily. Three-four goals. Manchester didnt't do much, in my opinion.
— Viasport Fotball (@ViasportFotball) November 7, 2018
In a separate interview, per Football.Italia.net, Ronaldo again reiterated that Manchester United did ‘nothing’ during the game, before claiming that Juventus dominated for 90 minutes and had so many chances.
Man United fans have seen his comments and think they aren’t impressed with Ronaldo’s comments.
I fully don't even like Ronaldo any more. Never thought I'd say that
— Tom_barber (@Tom_barber) November 7, 2018
Utterly disrespectful. Even showed off his abs against us of all clubs. Yet quite a few guys mocked me for saying he shouldn’t receive a warm welcome at OT.
— Gianluca Naudi (@Gianluca_Naudi) November 7, 2018
Don't think he will be getting such a warm welcome from OT again after tonight.
— Cloud. 🇾🇪 (@cloud_CSGO_) November 7, 2018
Ronaldo being bitter lol talking about gifts that career you have was gifted by united lol so sit down and shut up #MUFC
— Robert Black (@RobertB19999) November 7, 2018
It's been emotional Cris…..but you can now do one lad. pic.twitter.com/h2DzePEX7I
— rocknrolla (@scottishdave84) November 7, 2018
Despite the loss, Juventus are still on top in Group H with nine points from their opening four games.
Manchester United are now in second with seven points accrued.