Mana Barrier

 is an active skill that can be taught to Sorcerers at level 40 and can be ranked up at later levels.

can be performed with a disc by the Sorcerer to absorb damage. In PvE, you shouldn't be getting hit anyways, but use this when you pulled too many mobs. also works to absorb damage from DoT effects. In parties, activating this right before you take unavoidable damage prevents you from being one-shot, and gives your party's healer time to react.

Amount of damage absorbed varies dependent on skill rank.

Rank table
To obtain and upgrade, one must find a Magic Instructor and pay a certain price of gold dependent on rank.

Glyphs
To glyph, a glyph must be obtained and learned only once. At level 60, a character has 50 glyph points available to spend on all available sorcerer glyphs. Most glyphs, specifically common glyphs can be purchased from a Glyph Master, while fine glyphs must be looted from enemies.

(Disclaimer: As NPC shop prices vary depending on a variety of factors, the prices below are subject to variation. Only take them as benchmarks.)