Which means the only ways I know of is blocking LoE (that does work against bursts right?) and specific Epic spells.
1% a CL is actually kind of low, depending on what this is for. In a non epic game that's about 1:4 odds, and even if they succeed the Game Disjunction still does not affect you.
Anyways, here's how I recommend blocking LoE:
Get yourself a semi spherical dome made of something really hard. Apply Hardness and such to make it more durable. Cast Shrink Item on it, and put it on your head. Set up a Contingency to cast some really low level Dispel on the hat if an enemy casts Game Disjunction on you. Choose to automatically pass your check.
Result: Enemy casts Game Disjunction, you now have a big dome blocking the area so it doesn't affect you.
This won't work if you're using an AMF obviously, and you'd likely need to Dimension Door out or something to keep up the fight.