I'm pretty sure it's this:
Checkered by the dawn, enslaved in life enthralling
Swept up by the mortal waste of my enslaved emotion
Agents of the cross in argentine frailty
Hopefully you'll stop him and delay the conquering angina
Hopefully you'll stop him and delay the conquering...
I slowed this down to 80% on my player to make it out, and similar wording is used in other Tristania/BTV songs, so I'm about 95% sure.
For those who don't know, the "Beyond the Veil" songs are about life in cults, specifically David Koresh's and Jim Jones's. The female voice in this one would probably represent the woman who brought Congressman Leo Ryan to visit the People's Temple in Guyana (the clean male voice probably represents Ryan), which is the time when Jones decided to lead his camp into the mass suicide he's famous for (this would be the verse "May milleniums gather on the mirage of desolated souls... I breed my afterthought"). You'll notice a part around the middle of the song where SFXs which sound like shots are heard (the killing of Ryan and his followers by Jones' people). "Angina" and "...of Ruins and a Red Nightfall" are also about the same cult.
HTH... I have no problem with differing opinions, of course
P.S.: "Argentine" = silver-colored, which is how the eyelids turn due to malnutrition. Nothing to do with Argentina