Thank you @Dremora , let me show him… Destruction. 
I researched who Abaddon is and I did not find anything interesting about him
He has a really powerful and solid personality and He teaches His disciples in a special way. I’ve working with several Deities (including Lucifer and Belial), but He is the most stern and strict of all of Them.
Based on my experiences, He mostly an observer of you, and rarely speaks to you while your developing (I’m in a really close relationship with Him / He is my Patron / and I hearing Him talking to me rarely, although Lucifer told me that I don’t have to be disappointed, because Abaddon sees everything what I’ve done, didn’t forgot about me, and He won’t - so yes, that’s Him), but if He decides to do, it will hit you in the face, but in the same way, it’ll be a big ass raise to your very being and possibly a huge milestone (or it’s base) in your evolution’s higher level.
is there any prayers to him
There is a good prayer to Him:
My black angel, who has fallen from the sky, surrounded by flames, with his glittering sword you have kept me on the hottest fire of the abyss where you trained me against all evils.
May my enemy never afflict me!
Oh, My Creator!
Archangel of the seven wings that came to my aid, consecrate me and eliminate any weakness that I may have before my enemy!
Show no mercy, pity, and compassion before him who rises against me.
Totally annihilate the purest feeling, only leaving my hatred for the utter annihilation of my enemy.
Everyone who tries to stand up against me, when they look at my face, may they tremble and fall before my feet;
Oh! Lord of destruction, Father of all pestilences, listen to the cry of this son and
fulfill my cry for vengeance.
Drag those that I whispered in your ear through the wind, and annihilate them!
Winged Guardian, protect this son and do justice against all my enemies!
So be it!
So be it!
And His enn: ❝ Es Na Ayer Abaddon Avage ❞
There is His sigils:
Described as an infernal and serpentine angel and called “the Un-nameable One,” Abaddon is the Angel of the Bottomless Pit. He rules over dark knowledge, poetry, sexual perversion, witchcraft (especially necromancy), medicine, isolation, music, temporal death, life in death, the sun and vampyrism. A great chief of demons and a lord of the abyss, he rules over death and disease. He is one of the four demonic gatekeepers, alongside Amaymon, Azazel, and Beliar.
Called “the Prince of War” and “the most august light of reason,” Abaddon is the chief of the demons of the seventh hierarchy (Furies) as well as cat demons and grasshoppers. His furies beget frenzy, bloodshed, homicides, frenzy, massacres, and lunacy.
Serving Satan in the office of psychopomp, he holds the key to the Outer Darkness. He is the enemy of Uriel who saw Yeshua (Christ) crucified. According to Abramelin, he is an officer under Amaymon.
Abaddon is simply the incorporation of a previous Greek deity into magickal demonology. In Greek mythology, Apollo, the Lord of the Silver Bow, was venerated in festivals held on the new and dark moon and often given gifts of cinnamon. Described as “shepherd-like in feature” and as very physically attractive, he ruled nature and sat beside Helena on Olympus. He was born on Asteria , the Golden Star Island known as “the earth which floats in the air.” Other myths depict him being born in Hades.
Apollo is one of the few greater deities whom the Greeks called a “daimon.” Apollo is called the “far-striker” or “far-darter” and he is viewed as a god of archery. He guarded a hilltop wherein a certain Sibyl/prophetess integral to Greek mythology dwelled. Apollo, like his sister Artemis, often sent plagues, and was both a “sinister” as well as a “light” deity.
Apollo is the divine image of the principium individuationis and the apparition following the fourth logos , and he acts as an interpreter of dreams and he plays a seven-stringed lyre. He ruled over philosophy, prophecy, healing, magick, destruction, esotericism, and theatre. Apollo is the light of the life of the material world, but not of the soul. He is also purported to be the god of Hyperborea, the second continent whereon the second race was born.
Friendly advice: If you decides to work with Him, get ready, because He not similar with Lucifer, Azazel or Paimon.