Imam.
A tyrant.
Aga is a three-letter word for a Turkish ruler.
ruler
Tyrant
Dictator
Ramses
"Hajj" is a word in the English language that ends with the letter "j." It refers to the Islamic pilgrimage to Mecca.
empire
tyrant despot
In Arabic, an Amir is a prince or ruler of an Islamic nation. In Hebrew, the word "amir" means treetop if spelled with an alef (אמיר), and sheaf if spelled with an ayin (עמיר).
Otto (or Otho)
Pharaoh, 7 letters only.