The Portuguese powerhouse was frustrated with himself for missing two chances early in the first half, but he quickly made amends by slotting past Wayne Hennessey after Scott McTominay's thunderous shot cannoned off the woodwork.
Fans in the UK can watch the goal below via Amazon Prime Video's official Twitter account...
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Scott McTominay is SO close with a stunning effort and Cristiano Ronaldo is there to tap in the rebound#PLonPrime #MUNBUR pic.twitter.com/bs6UqFFK7o — Amazon Prime Video Sport (@primevideosport) December 30, 20214ufe0fu20e37ufe0fu20e3 goals in 6ufe0fu20e35ufe0fu20e3 apps in 2021 for Cristiano Ronaldo ud83dudc4f#PLonPrime #MUNBUR pic.