Does Satan flee a long distance when he hears the neighing of horses, especially in Jihad for the sake of Allah?

There is no religious text stating that Satan flees upon hearing the neighing of horses. This is among the unseen matters that should not be delved into without a religious proof.

However, it is authentically established in the Two Sahihs (Bukhari and Muslim) that Satan flees upon hearing the call to prayer (adhan), and returns after it ends. Then he flees upon the iqamah (call to commence prayer), and returns thereafter to whisper to the worshipper.