It is narrated from Hazrat Sulaiman bin Surad (may Allah be pleased with him) that in the presence of the Prophet (peace and blessings of Allah be upon him), there was a heated argument between two men, and one of them became so angry that even now, in my imagination, I can see his nose which had turned red due to anger. The Prophet (peace and blessings of Allah be upon him), seeing his condition, said: "I know a word which, if this man afflicted with anger were to say, his anger would go away, and that word is «اعوذ بالله من الشيطن الرجيم.»."
Hadith Referenceمسند احمد / من مسند القبائل / 27205