Legendary French trainer Andre Fabre claimed a remarkable 11th victory in the Grand Prix de Paris at Longchamp on Bastille Day when Meandre swooped late to score under Maxime Guyon.
Aidan O’Brien saddled Irish Derby winner Treasure Beach, Seville and Marksmanship in the Group 1 contest.
Seamie Heffernan set out to make all aboard Seville with Treasure Beach content to sit in behind him as the pair built up quite an advantage over the rest of the field.
With three furlongs to go, O'Brien's duo still had around eight lengths advantage over Meandre in third, but Guyon was biding his time before getting serious on his mount inside the distance of the mile-and-a-half contest.
As Treasure Beach faded away, Seville tried his best to hang on in front but Meandre came with a telling late burst to land the Group One honours.
Seville hung on for second while French Derby hero Reliable Man could finish only third with Treasure Beach fourth.
Meanwhile, Watar came late and fast to land the Prix Maurice De Nieuil.
Ted Spread, one of three British-trained runners, set out to make all under Olivier Peslier in the one-mile-six-furlong Group Two heat.
He set a sensible pace up front and Mark Tompkins' runner was still in front at the top of the straight.
However, the challengers were lining up in behind and Davy Bonilla got a dream split aboard the Freddie Head-trained Watar, launching his run between Ted Spread and fellow British runner Times Up.
That kick proved to be decisive as the home-trained runner edged out John Dunlop's Times Up into second.
Shamanova also finished to good effect to take third place with the game Ted Spread having to settle for fourth.
Michael Bell's Allied Powers was fifth.