Blockade
From Revival Ragnarok Online
A harmful status condition which cancels all your currently active buffs and prevents any new buffs from being applied while active. It differs from dispelling in that it does not cancel any debuffs.
Resistance
Resistance can be gained (up to 50%) through increasing STR. No items currently exist to resist it, but they are planned.
+1/+2 Restoration Elixirs will protect against it and all other status conditions for a short time.