When Haitians say goodbye do they something like see you later/tomorrow if God wants/wills? it

Yes, they would say:

Goodbye. See you later God willing.

Orevwa. Na wè pita sidyeve.

Goodbye. See you tomorrow God willing.

Orevwa. Na wè demen sidyeve.

We'll talk tomorrow God willing.

Na pale demen sidyeve.

God willing → Sidyeve (from the french "Si Dieu le veut")

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