TS/Orb sorc.
The TS/Orb sorc are the type of sorc you'll see usually.

Since they won't have Fire resist, you don't need to worry about the resistance for Fire.

Blackhorn+Dual Lightsaber will make TS useless.
Then Dual Raven Frost, Snowclash belt will lower the damage dealt to you by Frozen Orb. Still try to dodge the Orb however, because it still hurt.

Hydra/Firewall/meter Sorc:
Depends on what his secondary skill is...if it's Orb, then you will have a problem.
Try max your Fire resist (95%) and use Rising Run, Hellmouth.
Use Dual Raven, BlackOak, Snowclash.

Get 5% All resist/5% Frw sc.