NPC - Damage to resist
Angel Cartel: EXP, KIN, THERM, EM
Blood Raiders: EM, THERM, KIN, EXP
Gurista Pirates: KIN, THERM, EM, EXP
Mordu's Legion: KIN, THERM, EM, EXP
Sansha's Nation: EM, THERM, EXP, KIN
Serpentis: THERM, KIN, EM, EXP
Mercs: All Damage types

NPC - Damage to give
Angel Cartel: EXP
Blood Raiders: EM
Gurista Pirates: KIN
Mordu's Legion: KIN
Sansha's Nation: EM
Serpentis: KIN
Mercs: Thermal
Rogue Drones: Explosive and EM, depending on type