the doua of fear is: "la ilah illa allah" (no god but allah) this is what written in sahih bukhari and sahih moslim
but u always should say the doua "سبحان الذي سخر لنا هذا وما كنا له مقرنين وإنا إلى ربنا لمنقلبون"
"subhan al-ladhee sakhara lana hadha wa ma konna laho moqreneen wa enna ila...
dear daiual
u know that it is so hard to prove that this was the tomb of someone who was before 2000 years!! how can some one prove this?? it is impossible
and u know what! both muslims and christians believe that prophet Jesus (PBUH) went to heaven and there is no body belong to him on...