I assume you are talking about Vahtacen's Secret

After you ask Polus about the next task you will have to find Jarol and he will
give you the key. The ruins are to the south of Cheydinhal.

Inside, just go left and talk with the overseer. Talk about the pillar. Before
you leave through the doors make sure you check the cask beside the table. As
you progress you may hear the sound of enemies, but don't concern yourself for
the moment. Talk with Denel about the reference and then go back to Skaleel to
pick it up. Bring it back to Denel. Get all four inscriptions by touching the
walls the glow blue. Now ask Denel about the translations. You should have both
fire and frost damage spells, but probably no raise and lower magicka spells.
No matter, just go to the chest behind the table and pick up the two scrolls
that affect magicka, among others if you wish.

Av molag means fire, av mafre means frost, sila means raise, and loria means
lower. Save first in case you mess up. Go to each side, read the tablet, and
then cast the spell on the pillar from that side; be sure to touch for the
appropriate spell. If done correctly the thing will open and you can enter.