If the dogs had any training, there are several commands that may work: No! Bad Dog! Go Home!, Get Back! Whoa! Then again if they had much training they'd likely not be chasing you. I use the really small dog biscuits as rewards when training my dogs & usually have a few in my jacket pocket. Several times, when a dog charged me, a well aimed biscuit & "Good Dog" have stopped them in their tracks. Most dogs are either showing teritorial behaviour or herding. If the dog is really determined, stopping will usually cause them to turn aside & stand there barking at you. But if the dog is large & menacing I would probably try to out run it. Don