Dec 20: Feast Day of Saint Ammon

Ok, I like this for two reasons: it took place in Egypt, and conversion related to persecution is kind of a running theme in Dar al Islam:

St. Ammon

Feastday: December 20
250

One of the Theban Martyrs who were converted by Egyptian Christians. Ammon, along with Ingenes, Ptolemy, Theophilus, and Zeno, were guards during the persecution of Christians in the reign of Emperor Decius. During the torture and trial of these prisoners, Ammon and his fellow guards were converted to Christ. They cheered the faithfulness of the Christians under torture and urged them to endure in their courage. As a result, Ammon and the others became prisoners. They were beheaded displaying the same Christian constancy.

HT to Catholic Online.