Opus Magnum lyrics

[Yautja]

When I search for Opus Magnum lyrics, they always seem to miss one line. The chorus goes like this:

Pectus percutitur
Secrificabor
Innocens igitus
Sanguis meus
Purificatio
Opus est magnum
*missing line*
Paratus sum

So does anyone know what they sing? Also could someone maybe translate the lyrics?

[Peter]

As it were, I could never find it in the lyric books and it's almost impossible to hear. If someone else has found that line (and translate it, perhaps :-D) then I would be happy to put it on the site.

Peter