Ronaldo's goals came in the second half to add to Gareth Bale's opener in the first half. Elsewhere Liverpool settled for a one all draw with Russian side Spartak Moscow.
Manchester City beat Shakhtar Donetsk two nil thanks to goals from Kevin de Bruyne and Raheem Sterling. 2004 Champions FC Porto thrashed Monaco three nil in France.
On fire Spurs forward, Harry Kane struck a hat trick as Tottenham beat Apoel Nicosia three nil.
He scored the first goal with his left foot and a hint of offside to ease Tottenham nerves as APOEL threatened and the second swept in with his right to shatter any attempted fight-back by the home team.
His third was a header to put victory beyond doubt and ensure six points from two games for Pochettino's team ahead of the next two fixtures, away and at home against holders Real Madrid.
In fairness, he is scoring against everyone. Back to his prolific best after a barren August with nine goals in five games for Spurs this month - seven in his five Champions League appearances.
-Dailymail