Ronaldo was seen grabbing his crotch in response to taunts from Messi, causing outrage and leading to calls for his removal from the country.
However, Al-Nassr has claimed that the gesture was made due to a "sensitive" injury.
During and after his team's 2-0 defeat to Al-Hilal on Tuesday, the Portuguese international once again made headlines. Ronaldo was booked for a tackle that resembled a move in the WWE, and subsequently responded to the chants of Lionel Messi from the home supporters by making the controversial gesture.
Given that the obscene gesture was made during the holy month of Ramadan, it has caused widespread offense across the country. Online, a trend has emerged with the title "Expelling the fan's abuser" seeking Ronaldo's removal from the country.
Al-Nassr has downplayed the significance of Ronaldo's controversial gesture, claiming that it was the result of a "sensitive" groin injury. The club's board provided a statement to journalist Muhammed Al-Enezi on Wednesday, stating that "Ronaldo suffers from an injury. His challenge with Gustavo Cuellar, the Al-Hilal player, started with a blow in a very sensitive area. This is confirmed information. As for the fans' explanations, they are free to think whatever they want."
This is not the first time Ronaldo has reacted strongly to taunts from opposing fans about his Argentine rival. His gesture likely also reflects his frustration with Al-Nassr's recent struggle in the Saudi Pro League title race, having fallen three points behind leaders Al-Ittihad, who have a game in hand.
Despite the setback, Ronaldo will have an opportunity to bounce back when he leads his team out in the King Cup semi-final against Al-Wehda at home on April 24.