The word(s) "conspiracy" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Pickthal translation.

(1) Hast thou not observed those who were forbidden conspiracy and afterward returned to that which they had been forbidden, and (now) conspire together for crime and wrongdoing and disobedience toward the messenger? And when they come unto thee they greet thee with a greeting wherewith Allah greeteth thee not, and say within themselves: Why should Allah punish us for what we say? Hell will suffice them; they will feel the heat thereof - a hapless journey's end!

(2) Lo! conspiracy is only of the devil, that he may vex those who believe; but he can harm them not at all unless by Allah's leave. In Allah let believers put their trust.