Once it is obtained, there will be an icon in the bottom corner of the screen that appears as a Spartan helmet. The "plume" of the helmet is the Rage of the Gods meter. Once the meter is totally full (Athena usually tells Kratos when it is), press L3 and R3 at once to activate the Rage of the Gods. Kratos will become "supercharged" with power, his attacks will do far greater damage, and he will not be knocked back by enemy attacks. Once activated, the power will last until the meter is completely drained, and after that, the meter can be refilled by successfully fighting and defeating enemies.