English:
""For thine is the kingdom, and the power, and the glory, forever. Amen"

Irish:
""Óir is leatsa an ríocht, agus an chumhacht, agus an ghlóir, go deo na ndeor. Amen"


Looks good to me. The only part that looks unfamiliar is translating forever as "go deo na ndeor"

Anyone have any critiques or improvements that could be made? Thanks a ton!

This seems good, especially for google translate. Go deo na ndeor is more emphatic than simply just go deo, i.e. something more like 'for ever and ever' in English

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I'm an intermediate speaker of the Corca Dhuibhne dialect of Irish and also have knowledge on the old spelling
Soir gaċ síar, fé ḋeireaḋ thíar

Awesome. Thank you.

By the way, how do I type in the "Old Irish type font" that you have in your signature?

The translation offered by google translate is the one prescribed by the churches in Ireland which have lots of translations available online

It is under the menu above the text box when you go to write a reply. You can also change the size of the font, change the color, add links, underline, bold, etc.

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I'm an intermediate speaker of the Corca Dhuibhne dialect of Irish and also have knowledge on the old spelling
Soir gaċ síar, fé ḋeireaḋ thíar

We actually say "trí shaol na saol" at Mass rather than "go deo na ndeor".