The Portuguese veteran is targeting Asia's top club crown to add to his long list of achievements when the competition kicks off on Monday.
"Al Nassr captain Cristiano Ronaldo was not feeling well today and was diagnosed with a viral infection," said a club statement posted on social media platform X on Sunday.
"The team's doctor confirmed he needs to rest and stay at home. As a result he will not be travelling with the team to Iraq today. We wish our captain a speedy recovery."
The former Real Madrid and Manchester United forward saw his first attempt with the Saudi side Al Nassr end in a quarter-final penalty shootout defeat to eventual champions Al Ain earlier this year.
Despite the absence of the 39-year-old Ronaldo for Monday's opening encounter in Bagdad, Al-Nassr are still able to call on Sadio Mane, Aymeric Laporte and Marcelo Brozovic.
Now rebranded as the Asian Champions League Elite, Al Nassr and the other teams from Saudi Arabia will be a major threat after spending vast sums of money in the last two years on the likes of Ronaldo and Neymar.
Al Nassr, Al Ahli and Neymar's Al Hilal will all be involved when the Champions League Elite launches on Monday with a new format that splits 24 teams evenly into two groups of East and West.
September 15, 2024