I lost my passport 3 days before I am going...

We would like to inform you that if you lose a passport, you must check the police station to report the fact that the passport has been lost with a copy of the lost passport from your employer and a loss report issued by the police station showing the passport number and the names of the dependents if any. After processing the required documents and the police certificate, the application is submitted to the General Directorate of Residency to seal it and then return to the same police department that issued the report, where you get a certificate proving your passport loss in Arabic, and this certificate is issued only after obtaining the stamps required from the courts of Dubai.
Finally, you can take this certificate to your embassy in the UAE to issue a new passport instead of the missing one.