The Dhamma.
It is the power of truth, justice and peace discovered by the Buddha which provides spiritual solace for devotees to maintain peace and happiness. When we develop our compassion, devotion and understanding, this power of the Dhamma protects us and helps us to develop more confidence and strength in our mind. Then our mind itself becomes a very powerful force for our own protection. When it is known that we uphold the Dhamma, people and other beings will respect us. The power of the Dhamma protects us from various kinds of bad influence and evil forces. Those who cannot understand the power of the Dhamma and how to live in accordance with the Dhamma, invariably surrender themselves to all forms of superstitious beliefs and subject themselves to the influence of many kinds of gods, spirits and mystical powers which require them to perform odd rites and rituals. By so doing, they only develop more fear and suspicion born out of ignorance. Large sums of money are spent on such practices and this could be easily avoided if people were to develop their confidence in the Dhamma. Dhamma is also described as 'nature' or 'natural phenomena' and 'cosmic law’. Those who have learnt the nature of these forces can protect themselves through the Dhamma. When the mind is calmed through perfect knowledge, disturbances cannot create fear in the mind.