The talismanic attacker caused concern among players and staff of Real Madrid after he went down under a challenge and hurt his left leg after colliding with reserve goalkeeper Kiko Casilla while going for a ball crossed into the area near the end of the session.
He appeared in pain and stayed on the ground for a few moments as players surrounded him with concern. He was able to walk off the pitch on his own and doctors quickly dismissed any serious injuries, saying it was a minor knock to his thigh.
Ronaldo said it was just a scare and guaranteed he will be fit to play Saturday's final against Atletico Madrid in Milan.