Anything anti tank should be your first priority since crons can field tons of av13 without even really trying and most with jink. After that pretty much all our core units are worthwhile against them as long as you can deal with their mech aspect. If not its straight lose once they eliminate our AT.
From there it depends, I always see a strong mech element and then imotekh, FW tomb stalkers, teleporting spiders, wraithstars, plus other odd stuff. In most of these instances a huskblade can be pure gold.
NIght shields are also really really good here since their entire army barring lanceteks and imotekh is range 24" = 18" ranged army (im speaking of units they actually use although you run NS long enough you might even see doomsday cannons and hvy gauss cannons hit the field).