Before entering Ihram

اللَّهُمَّ إِنِّي أُرِيدُ الْعُمْرَةَ فَيَسِّرْهَا لِي وَتَقَبَّلْهَا مِنِّي

Allahumma inni uridu l-'umrata fayassirha li wa taqabbalha minni

O Allah, I intend to perform Umrah, so make it easy for me and accept it from me.

A traditional intention formula for Umrah, taught in Hanafi fiqh (al-Hidāyah) to be said before the Talbiyah; not a narration from the Prophet (peace be upon him).