Dua when feeling pain anywhere in the body

A’üdhu bi-izzatillahi  wa qudratihi wa min shar-ri ma ajidu wa uhadhir.

I seek refuge in the honour and power of Alláh (SWT), from the mischief of the pain which I feel and fear. (Muslim)

Note: Place the right hand on the affected area and recite Bismilláh thrice, thereafter recite the above-mentioned duá seven times.