resort

(tehn): spring
(fig): moral support
(sfera): scope
(sfera): sphere
(sfera): competence
(sector): sector

nu e de resortul meu = it is off my beat (altogether)
nu e de resortul meu = it is outside my competence
nu e de resortul meu = it is out of my sphere
nu e de resortul meu = it is beyond my scope