Here are some other ways to say "God bless" in French, depending on the context and level of formality:
* "Dieu vous protège" (God protect you) - More formal and can be used in a broader sense.
* "Que le Seigneur vous bénisse" (May the Lord bless you) - More religious and formal.
* "Bon Dieu" (Good God) - Less formal, often used as an exclamation of surprise or amazement.
* "Bon courage" (Good courage) - More informal and well-wishing, implying strength and good luck.
* "Tout le meilleur" (All the best) - General good wishes, not necessarily religious.
The best choice will depend on the situation and your relationship with the person you are speaking to.