、。
Damn, he just ignored me.
Literal
Damn, through-do [derogatory-やがった].
スルーする is a wasei-eigo verb from English 'through,' meaning 'to ignore / pass over / not respond.' ~しやがった is the derogatory past — 'that bastard went and ignored me.' くそっ is a crude interjection equivalent to 'damn / shit.' Three words, maximum frustration — compact colloquial rage.