The Parisian club has now won the prestigious cup on fourteen different times.
Paris Saint-Germain needed a stoppage-time leveler followed by a perfect penalty shootout to get past their arch-rivals in Kuwait and capture a fourth straight Trophee des Champions victory.
The Champions League holders seemed to be sailing towards a comfortable win in the showdown between the French league champions and the Coupe de France holders after the French winger found the scoring in the opening stages.
Yet, Marseille fired twice in the closing moments to take a surprise advantage. First, Mason Greenwood converted from the penalty spot, before Willian Pacho inadvertently turned the ball into his own net for an own-goal.
In a breathtaking turn of events, Goncalo Ramos snatched a crucial leveler in the dying seconds to send the match into a deciding shootout. PSG goalkeeper Chevalier then emerged as the hero, saving decisive attempts from O'Riley and Traore.
From the spot, Ramos, the midfielder, the full-back, and the young talent all scored with composure for PSG to complete a 4-1 penalty victory.
Now 14-time champions Paris Saint-Germain, who met last season's Ligue 1 second-placed team Marseille after achieving a domestic double, have now won this trophy for the 12th time in the last thirteen seasons.
