Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The enemy in a dream may be a friend in reality, and a friend may be an enemy. Shaking hands with the enemy indicates reconciliation and the end of enmity. Victory over him indicates salvation from worry.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Victory over the enemy in a dream is victory in wakefulness. Fleeing from him is safety and security. Whoever sees himself following his enemy will overpower him.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The enemy is interpreted as a hypocritical friend. Reconciling with him is good and beneficial. Whoever sees his enemy happy will be afflicted with worry.