At first Sehun's concept photos, on his shirt the word "الماس" was attention grabbing :

Credit to owner

then the word "جنگجو" (means fighter) written on Luhan's shirt on Music Bank performance :

130809 Music Bank

do they really know how many fans they have in Iran? i assume they know! i still can't believe my eyes! 

EXO fighting! Hunhan fighting!