Snake in a dream symbolizes a fight.
It can mean that you are in a fight with someone. Snake dream can also serve as an alert to stay watchful.
It is possible that such dream prognosticates future events of being in a fight within a situation or some person in your waking life. Thus the dream can also be a representation of your feelings of being attacked.
Fight symbolism in a snake dream is oracular one and brings knowledge of future events.