how do you break a invisibility spell or pact??? And if it's a strong one how do you break it? It's for a friend that needs it the most... He might be under a blindness spell, invisibility spell or a pact... If it was the cause from the devil, should he go directly to the devil? He has tried almost everything... Please all your help would be nice... Please anything, anything at all would help... If he must go to the devil for help how should he summon him? Anything... Anything at all would help a lot... Thank you for all your support and help for the ones that help...
I would summon Lucifer by chanting his name in multiples of three, make a sacrifice, then make my petition. Or just pray to him, knowing he hears you. And don't fear him if you do this. As much bad stuff as people say about him, he's kind and loving to those who respect him. Now you don't want to call his other name, Satan. This means "enemy". And if you're not a servant of Satan (which I am not), I tend to believe he may approach you as an enemy, because that's what you're calling him.
I would just clanse your friends energy of that energy and than put a protection spell, and im prety shour thatit has nothing to do with the devil and since you said (and I quote) "he might be under a blindness spell" I hope you dont meen loss of seeing, cause I have never heard of magic causing that, and its something that can not be reversed by magic
Might need more information because currently this sounds fake for a few reasons. If your friend really has been cursed by something, summoning it and asking for it to be removed might not be the best thing. If your friend was disrespectful to 'the devil' then summoning him again and saying the spell should be removed isn't smart. If you want to resummon 'the devil' though, be respectful, leave an offering, prove the lesson was learned and ask kindly for its removal.
An easier route is removing it yourself through a cleansing or a reversal spell. You should feel better after the cleansing or reversal. A tarot reading afterwards I've been told can help conferm if the curse was removed or not. After its done, be sure to protect your friend and his home [while I don't believe in 'the devil' you don't want to leave a door open for someone like him to come back in.]