The first half was played at a high tempo to the delight of the 68,000 fans at the King Fahd Stadium as Spaniard Bernat saw red for a professional foul in the 39th minute.
The dismissal seemed to spur PSG on and the French side doubled their lead just before the interval as Marquinhos steered home following a fine pass from Mbappé.
The best goal of the night came in the last minute as Brazilian Talisca drove home from the edge of the box to bring the curtain down on a hugely entertaining 90 minutes of action.