Ranged classes generally shouldn't have much of a problem avoiding succubi missiles, seeing how they really move pretty slowly and the homing function isn't that hard of a gimmick to get over (they move really slowly for projectiles)
DHs have vault, smokescreen to avoid.
Wiz's have mirror images, teleport, armors
Witch docs have spirit walk, and usually its the minions soaking up the missiles anyway.
For melee classes though, there's really no two way around about it, either stack up your resists / hp till they stop becoming a bother, pop your defensive cooldowns when engaging a group of them, or keep them crowd-controlled. You're bound to get hit by the missiles when you solo, because you got to be in their face when you're pounding on them. If you're in a group, just let the range get them down while you avoid the missiles with leap, charge, and etc.