 FAIR: Maximus orders "Unleash Hell". Even if Hell is not a concept  of his religion, he seems to be an educated man; he might be aware  of the concept and use the word for rhetorical value. Also, since  the movie is in modern English, "hell" could be reasonably assumed  to be not from the Christian religion, but the modern translation of  a Latin word having the alternate meaning of "hell" as in any  burning, deadly place.