Likewise , resistance to the Arab onslaught in Egypt was minimal .
The Greek - Orthodox Patriarch Sophronius negotiated with Caliph Umar in 637 for the peaceful transfer of the city into Arab control ( including The Umariyya Covenant ) .
Resistance to the Arab onslaught in Egypt was minimal .
The Greek - Orthodox Patriarch Sophronius negotiated with Caliph Umar in 637 for the peaceful transfer of the city into Arab control ( including The Umariyya Covenant ) .