From Lineage 2 Encyclopaedia

Properties

Guard Stance
Increases P. Def. by 121.8 and Shield Defense by 50%. Consumes MP proportionately to your level.
Class	Temple Knight
Type	aura
Attribute	-
Recast time	0 s
Cast time	0 s
Cast range	0
Classes with same skill	Temple Knight, Shillien Knight, Evas Templar, Shillien Templar

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
43	1	Increases P. Def. by 121.8 and Shield Defense by 50%. Consumes MP proportionately to your level.	8	0	31
52	2	Increases P. Def. by 161.1 and Shield Defense by 50%. Consumes MP proportionately to your level.	10	0	79
62	3	Increases P. Def. by 212.1 and Shield Defense by 50%. Consumes MP proportionately to your level.	12	0	266
70	4	Increases P. Def. by 256.5 and Shield Defense by 50%. Consumes MP proportionately to your level.	13	0	940