The Coptic Cyrillian (Miaphysite) Christology stresses the unity of Christ’s Divinity and Humanity. This union is emphasized in the Coptic view of theosis.
“Wherefore, we say that the two natures were united, from which there is the one and only Son and Lord, Jesus Christ, as we accept in our thoughts; but after the union, since the distinction into two is done away with, we believe that there is one nature of the Son, as one, however, one who became man and was made flesh.” - St Cyril of Alexandria, Letter 40:14
“But, did the Divinity [of Christ] suffer? …] The holy fathers explained this point through the aforementioned clear example of the red-hot iron, it is the analogy equated for the Divine Nature which became united with the human nature. They explained that when the blacksmith strikes the red-hot iron, the hammer is actually striking both the iron and the fire united with it. The iron alone bends (suffers) whilst the fire is untouched though it bends with the iron.” - Coptic Orthodox Pope Shenouda III of Alexandria
Hermias: Have they therefore been confused and both become one nature?
Cyril: But who will be thus distraught and unlearned as to suppose that either the Divine Nature of the Word has been turned into what it was not, or that the flesh went over by way of change into the Nature of the Word Himself (for it is impossible)? but we say that One is the SON and One His Nature even though He be conceived of as having assumed flesh with a rational soul. For His (as I said) hath the human nature been made, and He is conceived of by us none otherwise than thus, God alike and man. - St Cyril of Alexandria, That Christ is One
Hermias: But if we say that the Nature of the Son is One, even though He be conceived of as Incarnate, all needs there to confess that confusion and commixture take place the nature of man being lost as it were within Him. For what is the nature of man unto the excellency of Godhead?
Cyril: In highest degree, my friend, is he an idle talker who says that confusion and commixture have place, if one Nature of the Son Incarnate and made man, is confessed by us: for one will not be able to make proof thereof by needful and true deductions. But if they set their own. will as a law to us, they devised a counsel which they cannot establish, for we must give heed, not to them but to the God-inspired Scripture… - St Cyril of Alexandria, That Christ is One