Rop réid rémunn cech n-aimreid!

Rop réid rémunn cech n-aimreid!

(may be * smooth * before-us * every * unsmoothness)

May every rough spot before us be smooth.
May every difficulty before us be easy.

This is a line from "Hymnus S. Colmani Mic Ui Cluasaigh" in the Irish Liber Hymnorum, edited by J. H. Bernard and R. Atkinson (London, 1898).