#7 Malmo - 6 goals (2 games)
Six goals in just two games is ridiculously good. Against no other side does Ronaldo boast a better game-to-goal ratio on the list.
In the group stages of the 2015-16 season, the Portuguese ace struck twice in a 2-0 victory in Sweden before a four-goal salvo in their historic 8-0 drubbing at the Santiago Bernabeu.
#6 Atletico Madrid - 7 goals (10 games)
Ronaldo has played Atletico 35 times in his career and scored 25 goals in the process, seven of which have come in the Champions League.
The first, in the 2014 final, is also the most special, followed by two hat-tricks - in the semi-finals of the 2016-17 season and two years later in the last-16 to secure a famous comeback win for Juventus.
#5 Borussia Dortmund - 7 goals (9 games)
Ronaldo has tasted victory only four times in nine games against Borussia Dortmund, but personally boasts a good record with seven goals.
Five of them have come in three different group stage meetings, while the other two were in the 2012-13 semi-finals and 2013-14 quarter-finals.
#4 Schalke - 7 goals (4 games)
In 2014 and 2015, Real Madrid faced Schalke twice in the last-16, with Ronaldo scoring in all four games while also making three assists.
His incredible tally includes a brace on three occasions, the third being the most important as Los Blancos survived a 4-3 loss to advance into the next round.