Russian city of Kazan is the setting for the second match of the Federation Internationale de Football Association 2017 Confederations Cup between European champions Portugal and CONCACAF Gold Cup winners Mexico.
Host Russia tops the group with three points after defeating New Zealand 2-0 in the opening match of the FIFA Confederations Cup on Saturday.
The second half started in a similarly cautious vein as the first, but came to life in the latter stages, with defender Cedric giving Portugal the lead on 86 minutes after Mexico failed to clear the danger in their box.
Ronaldo, 32, is reportedly furious over a tax probe into the off-shore accounts dealing with his image rights, and has reportedly vowed to leave Spain.
But Portugal's talisman was at his best in an action-packed first half in his team's opening match, with hosts Russian Federation and New Zealand still to come in the group.
Mexico's defense was only anxious about Ronaldo there, and that was a mistake.
The Euro 2016 winners took the lead on 34 minutes when Ronaldo sprinted into the box and his beautifully-timed pass found Quaresma unmarked in the area.
After a stray touch in what is usually a scoring position for him, Ronaldo caught out the Mexican defence with a lovely reverse ball for Quaresma who showed composure to mug the goalkeeper and tap it home.
Once the match got underway, Mexico dominated possession without really troubling Portugal keeper Rui Patricio.
Mexico's all-time top scorer grabbed his 48th global goal from 93 appearances after some awful defending by Portugal.