There's no account in the Bible that Joseph revenged the injustice meted out to him by Potiphar and his wife. Looking back, Joseph realized that without the injustice, he won't be a prime minister. Actually, Potiphar and his wife played vital roles in helping Joseph to become a prime minister. Love your enemies and don't use the weapon of prayer to kill those who God has positioned to push you to your throne through the instrumentality of injustice and wickedness. Everything is working together for your good if you truly love God.