How do you say god bless in french language?

There isn't a direct translation for "God bless" in French that carries the same exact meaning and usage. However, depending on the context, you can use these phrases:

Formal:

* Que Dieu vous bénisse: This is the most literal translation and means "May God bless you." It's formal and used in religious contexts.

* Que le Seigneur vous garde: This means "May the Lord keep you." It's also formal and appropriate for religious settings.

Informal:

* Bonne chance! This translates to "Good luck!" and is a common way to express well wishes.

* Tout le meilleur! This means "All the best!" and is another informal way to say "God bless you."

* Sachez que je pense à vous: This means "Know that I'm thinking of you." It's a heartfelt way to express concern and good wishes.

The best choice will depend on the specific situation and your relationship with the person you are talking to.