>>102000
From Kenneth Grant's Aleister Crowley and the Hidden God (brackets are my notes):
Abrahadabra: The formula of the Great Work. Abra is the solar form of Amen, the Hidden God. Amen was a title of Sebek-Ra [or Sobek-Ra], or Set, in the Draconian Cult of ancient Egypt….Had, the heart of Abrahadabra, is the Chaldean name of Set or Shaitan [aka Satan], and Abrahadabra is the formula of his magick.
I can't help you with the true magickal meaning of Alakazam.
Sebek-Ra is pictured.