Thank you! I've heard my Muslims friends use the word many times, and in Spanish we have some idioms with it, legacy of our Arabian era (like "ojalá" for "I wish"). That's why I didn't think people would find it offensive. But it obviously depends on the country or social customs.
Anyway, apart from that and a small reference to praying time during the day, there aren't any religious comments in the game. It would feel strange to have a story set in Middle Ages without any religious background, that's all.