The Macaronic (Irish chorus with Englush verses) I believe translates like

And may you go safely, my darling
Go, go, go, my love
?Go quietly and go peacefully
Go to the door and fly with me
And may you go safely, my darling

Shule, shule, shule aroon,
Shule go succir agus, shule go kewn,
Shule go dheen durrus oggus aylig lume,
Iss guh day thoo avorneen slawn.