It's likely you're thinking of one of these phrases:
* "Pai to you" - This means "good to you" or "have a good one" and is a friendly way to say goodbye.
* "Pai to see you" - This means "good to see you" and is a polite way to greet someone.
* "Pai to know you" - This means "good to know you" and expresses appreciation for getting to know someone.
Please provide more context or the full phrase to get a more accurate translation.