The things you described is nothing to do with Nazar, when talk about Badua i do not see any relationship to Nazar at all. Unless they try to do something practical.
In any case if you still concern about Nazar here it is for anyone who suffering or suspecting Nazar.
Drood Sharif 3 time then
last two ayats of Surah e Alqlqm 11 time
drood sharf 3 time again
after that blow on the person suffering or blow on the water to drink.