Ash-Shaytan vs lord of the flies

Ash-Shaytan

name

  • Satan 

lord of the flies

noun

  • Beelzebub; Satan 

  • a ruler over a worthless kingdom; leader of a meaningless microcosm. 

How often have the words Ash-Shaytan and lord of the flies occurred in a corpus of books? (source: Google Ngram Viewer )