Treve and New Bay delivered devastatingly impressive performances in their Arc trials at Longchamp as Postponed also won.
Dual Prix de l'Arc de Triomphe winner Treve's bid for a hat-trick of successes in the race remains firmly on track following an authoritative victory in the Prix Vermeille.
The five-year-old cruised through to challenge on the outside of the field turning for home and she put the race to bed in a matter of strides in beating Candarliya by four-and-a-half lengths.
Surprise Juddmonte International winner Arabian Queen was unable to live with Treve's turn of foot and came home a well-beaten sixth.
French Derby winner New Bay coped admirably with the step up to a mile-and-a-half when stamping his class on the Prix Niel.
Countermeasure's pace-making duties set the race up perfectly for New Bay, who swept past Erupt after briefly being hemmed in by Ol' Man River.
Vincent Cheminaud never had to get too serious aboard New Bay and had two-and-a-half lengths to spare over Silverware at the line.
King George VI and Queen Elizabeth Stakes winner Postponed produced a gutsy performance to win the Prix Foy to put himself in the Arc picture.
Luca Cumani's four-year-old hit the front at the top of the straight and held off all challengers to provide Andrea Atzeni with a big-race victory following his St Leger disappointment.
Ervedya took advantage of a string of absentees to win the Prix Du Moulin after overcoming trouble in running in the Group 1 contest over a mile.
Arod, Dutch Connection, Esoterique and Territories were all pulled out of the race to leave French 1000 Guineas winner Ervedya clear to justify short-priced favouritism in beating Akatea by a length.
Last year's Abbaye winner Move In Time warmed up for another tilt at the race by winning the Group 3 Prix Du Petit Couvert for trainer David O'Meara and jockey Daniel Tudhope.
