Lyrical Interpretation...

When I'm falling down
Will you pick me up again?
When I'm too far gone
Dead in the eyes of my friends

Will you, take me out of here?
When I'm staring down the bottom
When I'm blinded by the lights
When I can't see your face
Take me out of here

When hes fallen from grace or from a position of power "protection, or safety\" and he cant take back what hes done maybe treason or some crime and his friends are forced to abandon him. They all left him for maybe the safety of their own lifes and he is standing in front of a firing squad, looking down the barrels of their rifles. The light that is behind his friends is so bright so he cannot see his friends faces. 

All I believe, and all I've known
Are being taken from me back at home
Yeah do your worst, when worlds collide
Let their fear collapse, bring no suprise
Take me out of here

This part here is possibly his family, maybe more his reason for living maybe a woman? At this point he seems to have nothing to lose and is telling them to do your worst, possibly to not harm who he is protecting? At the same time it could be possibly he is telling them to rise up with him. (normally at a firing squad it is a detail of a few men to commence the execution, and a high ranking officer to oversee which that one officer can be over ran) Hes asking his friends to release him?

Feed the fire, break your vision
Throw your fists up, come on with me
Feed the fire, break your vision

Feed the fire, break your vision I think is referring to let your anger rise, see past your orders and fight back with me. Revolt against those who would have you harm your friend.