Astrology and “magic” aren’t viable. Astrology tends to have its roots in faulty associations between events; i.e. comets as harbingers of doom. “Magic” is an odd duck which probably relates to the old practice of alchemy; rituals involving the administration of plant extracts, mineral agents, etc.; prestidigitation; and possibly ignorant people observing technology that they cannot explain (i.e. hosing down the hordes with Greek Fire or thrown fire pots of the same).

Nobody can “make you safe.” You can have a small army with you and you are still not completely “safe.” You can take classes in/read about self-defense, financial planning, etc.