Wayne knows that the world is coming to an end. Thus he has a "spaceship" to take off and leave earth.
Lil Wayne is saying that he is aware of the subliminal [secret/backwards] messages behind songs by other music artists these days & that the public however, are not aware.
Lil Wayne is trying to say; when he entered the world, he "cut the lights off" - meaning he ended the world [actually, he ended hip-hop music] because many famous rappers have accused him of 'killing' hip hop.
Lil Wayne's saying; Make sure you'll able to procede to Heaven & your protected... so you won't go to Hell. Be ready for it all.