Syria will deploy the Iskander anti missile system in case that Turkey uses the Patriot.

As there is a possibility that syrian planes might be exposed in the airspace of Idlib to Turkish Patriot fire, the Syrian forces have redeployed the Iskander missile system, coordinated by the Russian …
Iskandar system is distinguished as the natural predator of the Patriot system and it was manufactured for this purpose as it tracks the battery radar signal for the Patriot and identifies the source and then hits the target accurately. Iskander is characterized by being completely hidden electronically from the radars and that its accuracy is very large . It has an artificial intelligence system that is able to self-adapt and change direction without returning to the center until the target is hit …
The updated Iskander missiles were acquired by the Syrian army at the end of the year 2014 from Russia and now they must be used

dimpenews.com