If someone is stealing your seat in a dream, it means that you feel that something has been taken from you. Sometimes people who broke up with their partners also dream about stealing the seat.
Dream dictionary: Stealing your seat dream meanings
…Seeing the accursed one in a dream means evil, sin, lying, stealing, jealousy, sorcery, separation between husband and wife, disdain from performing one’s prayers, or it could mean preaching falsehood. Seeing the accursed one in a dream also means propagation of an invented world or ideas. If in a dream one becomes Satan, it is interpreted as loosing one’s sight. If one kills Satan in a dream, it means that he will deceive and conquer a deceiver and an evil person. In a dream, the accursed Satan also represents an enemy of the body and the soul. He deceives, cheats, disbelieves, as well as he is ungrateful, jealous, capricious, arrogant, heedless, impetuous, or he could represent a leader, a minister, a judge, a policeman, a man of knowledge, a preacher, a hypocrite, or one’s own family and children. Seeing Satan in a dream also means villainy, dirt, passion and…