AFP Sports looks at some of Ronaldo's finest moments since joining Madrid from Manchester United in 2009:
Pep's Barca beaten
Amid a run of four heated El Clasico clashes between Pep Guardiola's all-conquering Barcelona and Jose Mourinho's Madrid in the spring of 2011, Madrid struck first blood.
Ronaldo's towering extra-time header was the first goal he had scored from open play against Barcelona in eight matches and prevented Guardiola's Barca from doing the treble of La Liga, Champions League and Copa del Rey for the second time in three seasons.
Camp Nou silenced
A year later Ronaldo delivered his only league title in seven full seasons in Spain by scoring the winner in a 2-1 triumph at the Camp Nou which ended Barca's domination of Spanish football and precipitated Guardiola's decision to step down as coach.
Ronaldo's celebration as he wheeled away, saying "calm down, I'm here", became one of his trademarks amongst a record run of scoring in six straight Clasicos.
Finally topples Messi
Dethroning Barcelona at the top of La Liga wasn't enough to topple rival Lionel Messi's run of winning the Ballon d'Or for four straight years between 2009 and 2012.
However, Ronaldo finally overcame the Argentine in 2013 despite a trophyless season with Madrid thanks to a spectacular 66 goals in 56 games for club and country.
Ronaldo's delight was evident as he cried tears of joy at the award ceremony in Zurich.
Delivers 'La Decima'
Madrid president Florentino Perez splurged a then-world record 94 million euros ($104 million at current rates) on Ronaldo with one principal aim: "La Decima" -- Madrid's 10th European Cup.
After four years of heartache, including three consecutive semi-final exits, Ronaldo and Real delivered by downing cross-city rivals Atletico Madrid on Ronaldo's return to Lisbon, where he started his career at Sporting.
Ronaldo's goal in the final was Real's fourth as they ran riot in the extra 30 minutes after Sergio Ramos's stoppage-time equaliser denied Atletico a first Champions League.
However, Ronaldo's role cannot be underestimated as he smashed a competition record 17 goals over the season.
Two years on, the same two sides met in the Champions League final in Milan earlier this year and once again ended with a Ronaldo penalty.
This time his strike was decisive as Real edged a penalty shootout after the Madrid duo were tied at 1-1 after 120 minutes.
As in Lisbon, tears and a topless celebration followed.
Later in the summer Ronaldo was instrumental in securing Portugal's first major international triumph, at Euro 2016, despite departing the final injured and in tears, leading him to describe the past season as a "dream year".