The superstar - who recently switched Juventus to Manchester United - missed his first penalty in the national team since the 2018 World Cup when he burned from eleven meters in the 15th minute.
Half an hour later, Ireland took the lead at the Estádio Algarve.
But Ronaldo did as he had done so many times before and turned the match around on his own.
In the 89th minute, the 36-year-old equalized on a nod - and in extra time he hit his forehead again and arranged all three points for Portugal.
The text is updated.