Lucifer really has no place within the Abrahamic religions.
The word Lucifer is treated as morning star in Isa 14:12, then this is a denial of the deity of Christ. As in Revelation 22:16: "I, Jesus, have sent my angel to give you this testimony for the churches. I am the Root and the Offspring of David, and the bright Morning Star."
The Vulgate uses the same word in contexts where it clearly has no reference to a fallen angel: 2 Peter 1:19 (meaning "morning star"), Job 11:17 ("the light of the morning").
The KJV translators did not actually translate the Hebrew word ‏הילל as Lucifer. This word occurs only in the "Hebrew" Old Testament. They simply duplicated the word used in the Latin Vulgate that translated ‏הילל.
In the Vulgate, Isa 14:12 reads as follows: "quomodo cecidisti de caelo lucifer qui mane oriebaris corruisti in terram qui vulnerabas gentes." Lucifer in this context is not a proper name but the Latin word for morning star.
Morning Star literally refers to Venus, but metaphorically it is being associated with earthly kings, emperors, and pagan deities. Peter uses this word to show that the real morning star was Jesus, not Caesar. In Isaiah 14:12 it references the Babylonian king as the morning star and predicts his fall.