You could even go back to 523 AD when the Yemeni king Yūsuf Asʾar Yathʾar (nicknamed Dhū Nuwās by the Muslim tradition),persecuted and killed numerous miaphysite Christians in Najrān, on the northern frontier of Yemen .
Dhu Nuwas attacked their garrison at Zafar and burned the church there along with other Christian churches.
Dhu Nuwas next attacked the northern Yemenese city of Najran (now in Saudi Arabia) which was strongly Christian. The Christians resisted with desperate valor, appealing for help to Byzantium and to Persian Christians. When Dhu Nuwas found he could not capture the city by direct assault, he swore full amnesty to all who would surrender. The Christians knew they could not hold out much longer. Against the advice of their leader Arethas, they accepted the terms. Dhu Nuwas massacred them all according to a Syrian bishop, Simeon of Beth Arsham, who traveled to Narjan to investigate and report the story,
The Jews amassed all the martyrs’ bones and brought them into the church where they heaped them up. They then brought in the priests, deacons, subdeacons, readers, and sons and daughters of the covenant...they filled the church from wall to wall, some 2,000 persons according to the men who came from Najran; then they piled wood all round the outside of the church and set light to it, thus burning the church with everyone inside it.
On this day, 25 November 523, Dhu Nuwas also killed Arethas and three hundred and forty of his followers. Greek and Latin churches quickly added them to martyr lists.
Dhu Nuwas was not done. For a week he raged through the area, martyring thousands of Christians, who suffered terrible tortures rather than renounce Christ. According to accounts written within a century of the events, Dhu Nuwas dug deep pits and filled them with fire. Anyone who refused to become a Jew was flung in. All gave testimonies similar to some women of Narjan, who replied: “God forbid that we should deny our Lord and our God, Jesus Christ. For He is God and the Maker of all things, and He has saved us from eternal death.”
Now that is a good post