I'm inside the shrine of one of the dead Septims where I'm supposed to pick up an armor piece, the blood of a god thing. Sanctre something or other. I'm standing inside an antechamber before the magical barrier that drains my health and pushes me back. I've cleansweeped the entire dungeon for a lever or a switch or something else, but I couldn't find anything. On a side note, I ran out of silver arrows, so I had to sneak my way around after a while to avoid combat. If one of the supernatural creatures down here has an item I need, I've likely missed it.
Just now I realized I might have to literally 'dispel' the magical barrier with a 'dispel on target' spell or scroll (actually scroll, since my char can't cast magic), so I went back and now I'm busy visiting every merchant I can find in search of it. I know, it might not even be the solution to the problem.. but I really don't know what to do at this point. Can someone help me?