The eight-times World Endurance champion will make his WSBK debut as a replacement for Leon Camier, who is still recovering from a serious foot injury he sustained in Turkey last month.
Philippe is fresh from winning his latest world title with the Suzuki Endurance Racing Team after a drama-packed final round at Le Mans last month.
The Frenchman knows Magny-Cours well, having competed there many times onboard a Suzuki GSX-R1000 in the 24-hour Bol d'Or, including a podium finish in this season's race.
Camier is yet to return to the saddle since his spill in Istanbul, after which he underwent an operation to repair seven broken bones in his right foot.
After a short stay in a Turkish hospital, Camier is now back at home in Andorra and undertaking a comprehensive rehabilitation schedule. The British rider remains hopeful of returning for the final race of the season at Jerez later this month.