How do you say in the name of father son and holy spirit Scots Gaelic?

The standard translation of "In the name of the Father, the Son, and the Holy Spirit" in Scots Gaelic is:

An ainm an Athar, agus an Mhic, agus an Spioraid Naoimh.

You might see slight variations depending on the dialect or the translator's preference, but this is the most common and widely accepted form.