I am looking for help in learning how to write and or say "Stand and Fight" in Irish Gaelic for my personal motto and an eventual tattoo. I appreciate your help.
Sally

What comes immediately to mind is:

Seas d'fhód: Hold your ground

Wait for more

Redwolf

A variation on that is Seas an fód. Literally, it means "stand the ground", but it is a common way to say "take a stand".

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I'm not a native (or entirely fluent) speaker, so be sure to wait for confirmations/corrections, especially for tattoos.