What is the proper translation of this phrase....and is it a common greeting???
Dia Dich(sp???)

Dia duit, which sounds much like DJEE-uh DICH (or more commomly, DJEE-uh GWICH) in northern dialects. It is DEE-uh DIT in Munster, with the "d's" and "t" only slightly soft). It is the first thing people learn. Literally, "God to you", it is the normal way of greeting someone. The response is Dia's Muire duit. (Muire = MWIR-uh), God and Mary to you. It can be so informal that someone might just mutter "Muire". And as the big day approaches, the original person might respond to "Dia's Muire duit" with "Dia's Muire duit is Pádraig".