नमः शान्ते प्रशान्ते ह्रीं ह्रीं सर्व क्रोध प्रशमनि स्वाहा
The above mantra may be chanted daily by the person himself or the victim of the anger at least 108 times daily. This should be supplemented by pooja, archana havan etc. meant to propitiate Devi.