The missile launch did not result in a downing: the UAV moved away from the border and was not hit by the Patriot.

The Israeli Air Force has just confirmed it has fired a Patriot missile at an incoming drone from Syria. No direct hit was reported as the unmanned aircraft retreated back toward Syria and didn’t violate the Israeli airspace.

The IDF will not allow the State of Israel’s aerial sovereignty to be violated and will operate to prevent any attempts to harm its civilians

— IDF (@IDFSpokesperson) June 24, 2018

Footage has appeared on social media showing the smoke trail left by the missile fired by the Israeli battery.

Video of an Israeli patriot surface-to-air missile fired a short time ago towards #Syrian side of border pic.twitter.com/0tnuogGRrK

— Danny Makki (@Dannymakkisyria) June 24, 2018

As a side note and possibly unrelated, this is the ADS-B “picture” of the Israeli airspace minutes after the Patriot was fired. There were two IAF B707s (including one using c/s “Giant” that could be a C&C aircraft based on many reports) and one G-V Nachshon Shavit spyplane.