Killed by an faction NPC without even trying while questing

So… title very much says it all. Not sure why an Alliance Dwarf NPC randomly decided to charge and cut my Vulpera hunter to death, which in turn, incurs a unwilling activation of PvP along with an 5 point durability loss that is kind of unexplainable since my Vulpera is level 31, the first time he died to an Alliance NPC was by accident, this time, it was very much unintentional with all focus on the quest, The Wreckoning and I get one-shotted by said NPC without warning, except what really didn’t seem fair is that the NPC was aggroed outside of the normal notice and attack player range. At this rate, I’ll probably get NPC one-shotted within most likely next week… fix this Blizzard… give us an grace period against faction NPCs so we don’t die to them without even knowing they’re right there near us.