From French daily Ouest-France, on its July 19 edition, as reported by La Porte Latine:
"Cardinal Philippe Barbarin, Archbishop of Lyon, Primate of the Gauls, will take part on Sunday, July 24, in the 11 o'clock mass of the 57th Islamic-Christian pilgrimage of Le Vieux-Marché. Presided by Bishop Denis Mouteel, bishop of Saint-Brieuc et Tréguier, this celebration will take place in the chapel of the Seven Saints [Le Vieux-Marché, Côtes-d'Armor, Brittany]. It will be followed by the reading of the 18th Surah of the Koran, at the Stiffel fountain, 600 m away. This text evokes the legend of the Seven Sleepers of Ephesus, which is also told in a gwerz [Breton folk song]." [This is an image of the actual event.]
[Appendix:] Thanks to reader Rodrigo in the comments for being attentive to the first words of Surah 18 (naturally, chanted in the appropriate liturgical language at the event). Not every word of the Koran is a clear repudiation of Christian dogma, but these undoubtedly are:
In the name of Allah, the Gracious, the Merciful. All praise belongs to Allah Who has sent down the Book to His servant and has not put therein any crookedness. He has made it a guardian, that it may give warning of a grievous chastisement from Him, and that it may give the believers who do good deeds the glad tidings that they shall have a good reward, wherein they shall abide for ever; and that it may warn those who say, ‘Allah has taken unto Himself a son.’ No knowledge have they thereof, nor had their fathers. Grievous is the word that comes from their mouths. They speak naught but a lie.