Guardian's Crusade (PS1)

Traditional JRPG, with lots of... I don't know. Sorry, I have such a hard time telling these Japanese games apart, they all look the same to me, and I have no clue what to write. But I have to write something, so here goes... This one is probably about a guardian, who has to go on a crusade, to kill the non the believers and spread the good word of Jesus Christ. Sounds about right. Condition: Good/great, but no manual.