Raiden is really pissing me off. Everything with is fine, except for his electric fly.
The problem isn't when it is spammed. It's easy to block in punish when it is predictable. But if he does it in the air there is nothing to get him back. This essentially makes jumping highly punishable.
Like the guy said above me. Not jump. You have to adjust to every character you play. I play as Subby. I usually lay ice clones in the air (put partially on the ground, just so if he jumps and tornado's me, he'll get frozen. It's all about adjustment. Johnny Cage players can't just blindly rush Sub-Zero. When I play Kabal's, I can get zoned to death, so it would be wise if I don't use clones that much. Keep playing against Raiden (if you can) and try to come up with strategies with the character of your choice to beat him.