Sudarshan Kavach is recommended in Hindu astrology for protection. By wearing the kavach, one gets the desired strength to face difficult situations and enemies. As the name indicates, this kavach is based on the Sudharshana Chakra or discus of Hindu God Vishnu.
Astrologers and makers of the Sudarshan Kavach state that it is very powerful and it will protect the wearer against all sort of nefarious activities of enemies.
It is also believed that the Kavach will guide a person in taking good and wise decisions.