Duration: (Magery x 2) seconds
This spell grants the caster a temporary defense against spell interruption.
For each spell interruption taken during that period, the interruption has a chance of being ignored. This chance is ( Evaluation Intelligence + Meditation + Inscription ) / 4, with a cap of 75%.
For example, a character with 80 magery, 70 eval int, and 70 meditation and 20 inscription casts protection.
It lasts for magery * 2 = 80 * 2 = 160 seconds
Each hit has a ( 70 + 70 + 20 ) / 4 = 160 / 4 = 40% chance of blocking each interrupt.