The 31-year-old was a doubt to feature in the meeting with Portugal on Wednesday as a result of a head injury picked up in the game prior but played the full 90 minutes wearing a scrum cap as protection.
Ronaldo scored in the fourth minute of the match to become the highest-scoring European player in global soccer history.
He scored a hat trick against Spain including an wonderful bending free kick with minutes left in the match to secure a 3-3 draw.
Among players from all continents, Ronaldo now trails only Ali Daei, who scored 109 goals for Iran from 1993 to 2006.
Ronaldo also leads the way when it comes to the Golden Boot after scoring his fourth goal of the tournament.
Ronaldo was a clinical finisher and also one of Portugal's best defenders. In this World Cup, has scored four goals from just five shots.
Portugal looks well set to advance to the round of 16 while Morocco will certainly be going home.
Portugal's forward Cristiano Ronaldo sticks his tongue out during the Russian Federation 2018 World Cup Group B football match between Portugal and Morocco at the Luzhniki Stadium in Moscow on June 20, 2018.
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"We knew if we lost we could be out", Ronaldo said.
Morocco might be without Nordin Amrabat, who suffered a concussion in Friday's 1-0 loss to Iran.
"If I said that we don't believe we can qualify it would be a lie", said Fajr, one of 17 players born overseas in Morocco's 23-man squad.
A few Moroccan players caught they eye, but no one more so than Younes Belhanda, who looked unsafe against the Portuguese defenders.
Rodriguez saw her man score the winning goal of the game in just the fourth minute as Portugal got off to the best possible start at the Luzhniki Stadium.
The story, however, was mostly the same has it hand been in the first half, with the African side controlling the game, getting into some good positions and then failing to breakdown Portugal's defense in the final third.