O King of glory, Lord almighty,
on this day you ascended above all the heavens in triumph.
Do not leave us as orphans,
but send us the Spirit of truth
whom you promised from the Father.
Alleluia.
Source: Antiphon to the Magnificat for Second Vespers at Ascension (Roman Rite). Sometimes attributed to The Venerable Bede (672-735).
Original in Latin:
O Rex gloriae, Domine virtutum,
qui triumphator hodie super omnes coelos ascendisti;
ne derelinquas nos orphanos,
sed mitte promissum Patris in nos,
spiritum veritatis.
Alleluia.
For more reflections on this prayer / antiphon, see this article: http://www.liturgy.co.nz/reflection/603a.html