Aslkm DAm or dum means recite the ayyat and us ko mon say ghar kee four korners per ponh mar den.iss ka yeh matlab nahi kay aap poray ghar main ghom kar yeh har konay par ja kar phok maray gay just jahan namaz par rahay hoon wahan kharay ho kar hope u understand if not do tell me.
second thing nazar is whn someone see u or ur some thing which is good and he or she do not say Mashallah and became jealous wd u after that u became ill or having headche etc and hasad is whn Allah had given u more and someone have hasad in his or her mind that y u have this.
The best wwazifa to be protected from all this recite 3 times each surat iklas surat falak and surat nas after fajar and magrib and dum at urself or at everything Inshallah everything will be ok.