These are the evil Kings and Queens of Judah in the game:
(Evil): Athaliah, King Abijah, King Ahaz, King Ahaziah, King Amon, King Jehoahaz (Judah), King Jehoiakim, King Jehoiakin, King Jehoram, King Rehoboam, King Zedekiah, Manasseh, and Queen Maachah
Also, if you convert any of the following heroes, they also would get protection:
(Good): King Amaziah, King Asa, King Azariah (Uzziah), King Hezekiah, King Jehoshaphat (Kings) or King Jehoshaphat (Priests), King Joash (Kings) or King Joash (Priests), King Josiah, and King Jotham