Shoulder Sleeve Insignia of the Liwa Abu al-Fadhal al-Abbas; a mainly Shia Syrian militant group. Patch says "Servants of the Lady Zaynab Abu Fadl al-Abbas Brigades." ( (خدام آل السيدة، زينب لواء ابو الفضل العباس (ع )
Own work. Can be seen here, here, here, and here.