Latin:

Angele Dei,
qui custos es mei,
Me tibi commissum pietate superna;
(Hodie, Hac nocte) illumina, custodi, rege, et guberna.

Amen.

 

English:

Angel of God,
my guardian dear,
To whom his love commits me here;
Ever this (day, night) be at my side,
To light and guard, to rule and guide.

Amen.