A List Compiling the best and beautiful of Portuguese Christian worship songs found throughout the Internet and the amazing videos. You can also find the lyrics for many of these songs here as well.
Check it out at: http://musicouch.com/musicouching/top-five-portuguese-worship-songs/
"Here I am to Worship" by Michael W. Smith (In Portuguese)
Lyrics | Gesiel De Oliveira lyrics - Vim Para Adorar-te lyrics
Top Five Portuguese Worship Songs | Musicouch
Here is the music sheet for Agnus Dei in Portuguese:
Agnus Dei - Worship - english/portuguese