What is godspeed in French?

There isn't a direct equivalent of "Godspeed" in French. It's a rather unique English expression.

However, you can use different phrases depending on the context:

* "Bonne chance" - This is the most common and general equivalent, meaning "good luck."

* "Bon voyage" - This is used specifically for someone departing on a journey.

* "Que le meilleur vous arrive" - This means "May the best happen to you" and is a more formal way of saying "Godspeed."

* "Que Dieu vous protège" - This literally translates to "May God protect you" and is a religious equivalent of "Godspeed."

The best translation will depend on the specific situation and your desired level of formality.