When feeling pain (s) in the body, put your hand on the place where you feel pain and say:
Bismillaah. ‘A’oothu billaahi wa qudratihi min sharri maa ‘ajidu wa ‘uhaathiru.
Meaning: “With the Name of Allah” – Three times
Then say: “I seek refuge in Allah and in His Power from the evil of what I find and of what I guard against” – (Seven times)
Muslim 4/1728.