Cristiano Ronaldo is teased with Lionel Messi chants AGAIN during Al-Nassr's 1-0 defeat to Al-Ain in AFC Champions League quarterfinal... as video shows Portugal forward shaking his head in frustration at half-time

Just last week, the Portugal forward was reportedly summoned by Saudi Pro League chiefs to explain a gesture he made towards supporters who were chanting Messi's name towards him.