Sayyiduna Ka'b bin Malik (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: When any of you is afflicted with pain, he should place his hand where it hurts and recite this supplication seven times: "A'udhu bi 'izzatillahi wa qudratihi 'ala kulli shay'in min sharri ma ajidu." (I seek refuge in the might and power of Allah from the evil of what I find.)