Vallikat beat me. I was about to post my translation here... I'll save the space I guess

Tú que cambiaste en rocío (you who changed into dew)
las llamas del horno (the flames of the oven)
que había sido calentado (which had been heated)
siete veces más (seven times more)
y protegiste y salvaste (and protected and saved)
a tus tres santos hijos: (your three holy sons/children)
http://en.wikipedia.org/wiki/The_Prayer ... y_ChildrenI can't take credit for this... Joaquin discovered the Song of the Three Holy Children. We're trying to figure out where to go from there. Dig deeper, etc.
The "demonic" voice joins in on the word "diabolicos"... creepy. We thought, maybe someone is being possessed by an evil spirit, using this prayer to overcome (though it does seem to be failing, since as she gets further through it, the demonic-sounding voice only seems to get stronger).