Ronaldo scored all three goals as the Serie A champions won 3-0, to overturn a 2-0 deficit from the first leg and qualify for the quarter-final.
Bayern Munich striker, Robert Lewandowski, who is in action on Wednesday night against Liverpool, still leads the way with eight goals.
He is two strikes ahead of Barcelona’s Lionel Messi, Dusan Tadic of Ajax and Porto forward Marega.
UEFA Champions League leading scorers after Tuesday’s matches:
8 goals: Lewandowski (Bayern Munich)
6 goals: Marega (FC Porto), Messi (Barcelona), Tadic (Ajax)
5 goals: Aguero (Manchester City), Dybala (Juventus), Dzeko (Roma), Kane (Tottenham), Kramaric (Hoffenheim), Neymar (Paris SG)
4 goals: Benzema (Real Madrid), Ronaldo (Juventus), Jesus (Manchester City), Griezmann (Atletico Madrid), Guerreiro (Borussia Dortmund), Icardi (Inter Milan), Mbappe (Paris SG), Sane (Manchester City)