From Enigma Variations by Edward Elgar

Elgar's famous, serene, and stately melody
Is given a vocal adaptation with this
Lux aeterna requiem.
[ Lyrics from: http://www.lyricsfreak.com/a/amici+forever/nimrod+lux+aeterna_20279298.html ]
Lux aeterna luceat eis Domine cum sanctis tuis
In aeternum:
Quia pius es.
Requiem aeternam dona eis,
Domine; et lux perpetua luceat eis.
Cum sanctis tuis in aeternum quia pius es.