So I don't know if any of you fellow TSC fans are interested but i translated the spell used for the medallion. I don't know if this has already been done. But this is my version of it.
The Spell he said was : "Ignis dissipare et vallum"
Dissipare: to disappear/to scatter themselves
vallum: palisade, entrenchment, rampart.
Now before you stone me to death this is what the words mean: pallisade:fence of pales or stakes set firmly in the ground, as for enclosure or defense.
any of a number of pales or stakes pointed at the top and set firmly in the ground in a close row with others to form a defense.
entrenchment:an earth breastwork or ditch for protection against enemy fire, fortification
rampart:a broad elevation or mound of earth raised as a fortification around a place and usually capped with a stone or earth parapet.
such an elevation together with the parapet.
anything serving as a bulwark or defense
So basically the spell would be worded loosely like this: "fire disappear and scatter to defend"
That's how i see it