Sigils on floor and bedpost.
Hellblazer #190
john constantine
Sigils carved/drawn onto a skull. A bone knife. Known as soothsifts.
Hellblazer #189
Sigils on cover of Hellblazer.
Hellblazer #189
More information about the sigils used from Straight to Hell.
Being bound to a deck of playing cards.
Hellblazer #184
Constantine and The Swamp Thing talking about doors.
Hellblazer #184
Sacrificial spell.
Hellblazer #183
The makeshift pendulum in use.
Hellblazer #183
I’ve no idea what’s going on here.
Hellblazer #183.
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Update #1 with thanks to thehallofjudgment:
“Co iad ri luim an lair ? ” – “Who are they on the bare floor?”
“Bi Feoil Againn!” = “We shall have flesh again!”
This is the possessing soul speaking, a sort of a threat. John points out that they have their own problems to deal with, presumably he means the Soulherds on their way up from the petrol station. He could mean that the post is late, and the postman who is confronting him ought to be back to work.
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“Cha bhi sinn an geimhlibh bais” = “We shall not be in the bonds of death”
The earth from their graves has power against them. Remember that this earth has held them “below” for ages. There is also the tale of Dracula, where the earth he was buried in is needed for him to rest.
Unknown spell.
Hellblazer #183
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Update #1 with thanks to thehallofjudgment:
“Gun ghiomh, gun gheimh roimh neach fo’n ghrein,” means “Without fear, without terror of any one under the sun,” and comes from a verse called “Blessing of the Kindling”
Constantine using a spell to unlock a gate.
Hellblazer #183
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Update #1 from graycloak:
Sum amico huic domui • I am a friend to this house
I hope my dime-store Latin is at least somewhat accurate 
The rest of it feels a little cobbled together:
- Ancor, Anacor … these are two angels normally seen as part of a triad (at the very least. Sometimes even more). What happened to Anelos/Anylos?
- Candones helosi … this is another angelic name/title (i think), and it comes from the Ars Notoria’s Oration of the Physical Art, which is about divining “perfect knowledge of any disease.” I have never seen this used outside this context, so I would love any references to other uses people might be able to share!
- et vos eleutis phugori … I have no idea. I mean, et vos translates to “and you..” so, I assume eleutis phugori is the name of a spiritual entity, but can’t find any other references to it outside this comic (or any others inside the comic, for that matter).
Overall, this appears to be an invocation of 4 entities (angelic or otherwise) to either authenticate/vouch-for the claims of his incantation or to stand as judges of his supplication. That is, assuming “eleutis phugori” is another angelic/ethereal entity. As I said above, I haven’t been able to find references to it anywhere.
John Constantine's Spells 