The former Manchester United superstar was playing in the final of the Arab Club Champions Cup when he had a nasty fall.
Ronaldo scored twice against Al-Hilal, helping his team win their first trophy in the Middle East since he arrived.
Unfortunately, Ronaldo had to leave the field of play in the 115th minute after scoring the game-winning goal in the 98th minute.
Ronaldo, clearly distressed, was writhing on the floor.
A golf buggy was used to help get him off the field.
The 38-year-old was then assisted by his teammates to the sidelines.
Even so, the Portugal icon continued to revel in the victory.
After the final whistle, Ronaldo jumped to his feet and pumped his fists in the air.
He was also seen jumping for joy alongside his teammates.
He now has six goals in as many games in the tournament after his brace.
One cheering supporter wrote, “LOOK AT JOY OF CRISTIANO RONALDO.”
A second user remarked, “Love to see Ronaldo smiling again man. In this very spot, I spent my formative years.
“CRISTIANO RONALDO EFFECT,” a third exclaimed.