The star 33-year-old forward had scored only three goals from 70 shots in his previous three World Cups for Portugal in 2006, 2010 and 2014.
In scoring, Ronaldo bagged his 85th goal for Portugal and moved past Ferenc Puskas (84) to become the highest European goal-scorer in the history of worldwide football.
Portugal was powered by Cristiano Ronaldo's hat trick in its opening match of group play, with his late free kick securing a dramatic 3-3 draw vs. Spain.
Renard's side head into Wednesday's match in Moscow in need of a positive result, having been beaten 1-0 by Iran in their opening Group B match, but Renard accepts stopping Ronaldo could prove an impossible task.
Ronaldo's four goals top the individual scoring chart at this year's World Cup.
"It is not just about Cristiano Ronaldo", Santos said. At the World Cup?
Despite lifting the trophy at Euro 2016, Ronaldo's Portugal are not widely viewed as among the favourites in Russian Federation.
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It will be just the second meeting between the two countries, after Morocco beat Portugal 3-1 in the group stage at the 1986 finals. Let us know in the comments section below.
Ronaldo, however, will be a hard player to tame following his heroics against the Spaniards last week, when he gave an individual performance that is already being considered as one of the best in World Cup history.
Morocco, playing in its first World Cup in 20 years, linked play neatly through midfield but relied on set-pieces for its clearest chances - a growing theme at this year's tournament.
'We were in the sauna and I started to shave and I left the goatee.
Moutinho came off and Adrien Silva was introduced for Portugal, who had to survive more scares when Ziyach's strike was brilliantly blocked by Pepe and Benatia fired over in stoppage time.
Renard's team continued to dominate the possession as the match entered its final 15 minutes, but Portugal were remaining strong at the back as they closed on their first win of the tournament.
Last term Belhanda scored three goals and laid on eight assists for teammates across 30 appearances, suggesting there is a creative spark there which could be of great use to Newcastle.