2/1 favourite Earthlight stretched his unbeaten record to four by repelling a strong British and Irish challenge to win the Darley Prix Morny at Deauville.
The son of Shamardal, wearing the Godolphin colours of the sponsors, was giving Andre Fabre his first success in the race since Zafonic in 1992.
He was made to pull out all the stops by Raffle Prize who rallied strongly under Frankie Dettori after being headed a furlong out and was only a neck adrift at the line.
Richmond Stakes winner Golden Horde ran well in third but Royal Ascot victors A'Ali and Arizona struggled to make any impact.
"For me, that was one of the best races run in Europe this season, so I'm delighted because it was a tough race," Fabre told Sky Sports Racing.
"He showed ability and a great attitude, a typical Shamardal. He can go further - he'll be a Guineas horse for sure. The question is if he runs again this year - (but) I would say Newmarket (Guineas).
"If he recovers from this he might go for the Dewhurst. He's a top-class horse, obviously."
Barzalona said: "He was quite impressive. We were worried about the ground, but he's a very tough horse and did it very well. I don't know if he'll stay further, but the main thing was he won the race today."
Sky Bet cut the winner to 14/1 from 25s for the QIPCO 2000 Guineas and Head of Sports PR Michael Shinners said: "It looked a strong Morny on paper and he was a taking winner. He's in the right hands and it will be interesting to see if connections opt to take the Zafonic route and head to the Dewhurst now."