While the pair are often portrayed as rivals, the Portugal international insisted that he took just as much satisfaction out of Messi's stunning feat in the 7-1 rout of the Bundesliga outfit as everyone else.
"I’m happy for Messi; I’m happy for football," Ronaldo told reporters in Madrid ahead of his side's last 16 second-leg clash with CSKA Moscow on Wednesday night.
When asked if he thought he might equal Messi's achievement, the former Manchester United player humbly replied: "I’m not sure if I’m capable of one day scoring five goals [in one game]. I hope I can."
Ronaldo went on to say that he is not concerned by people's perception of him, and insisted that he is not solely motivated by the glory which comes with breaking goalscoring records.
"I don’t know if I’m more respected here now, but that’s not what matters to me," the 27-year-old explained. "I’m still the same person, with all my defects and virtues.
"I only worry about myself and my team. Goals don’t mean anything to me. To score or not doesn’t mean anything to me."
Ronaldo has racked up 126 goals in 127 appearances for Madrid since joining from Manchester United in 2009.
Since November, Goal.com has been publishing exclusive extracts from Graham Hunter's highly-anticipated new book, 'Barca: The Making of the Greatest Team in the World'. The very last extract, which was published last Friday, looks at Andres Iniesta's risky return from injury in the 2009 Champions League Final and how he was described by Wayne Rooney as the 'best midfielder in the world'. Don't miss it!