Dia dhuit a chara - apparently this is a formula that was used quite a lot in Irish for ending a story, perhaps you might know of others.
I was pleasantly surprised recently to see (and hear) that the Kerry storyteller Mike Burns uses exactly the same formula for starting the story Mac an Iascaire as Séamus Ennis does in this one.

www.storytellers-conteurs.ca/fr/conteur ... Burns.html