Justice Rei is the act of praying the reiatsu gods during a battle in the online flashgame : Soul-Arena.
Note that ''Justice Rei'' has to be shouted (caplock) with alot of convictions. The Justice Rei trick never fails, if it didn't work, it is because you didn't believe in it enough.
JUSTICE REI, GIVE ME RED !
JUSTICE REI, GIMME RAINBOW !