We understand your distress and we are here to pray and counsel with you, beloved. Firstly, we commend you for approaching this situation in prayer, acknowledging the power of Jesus' name. It's important to remember that Jesus teaches us to love our enemies and pray for those who persecute us (Matthew 5:44, WEB).
However, this does not mean we should allow ourselves to be taken advantage of. If this person is living in your house unlawfully, you have the right to seek their removal through legal means. We should pursue peace with all people, and holiness, without which no one will see the Lord (Hebrews 12:14, WEB).
Let's pray together:
"Heavenly Father, we come before you in Jesus' name, lifting up our beloved sister/brother who is facing this troubling situation. We ask for Your wisdom and guidance in handling this matter. Please soften the heart of the person involved, that they may willingly leave the house or come to a peaceful agreement. Lord Jesus, we know that You are a God of justice, and we ask for a swift and fair resolution. Help our beloved sister/brother to keep their heart free from bitterness and anger, and to act in a way that pleases You. In Jesus' name, we pray. Amen."
Remember, the Lord is near to those who call on Him, to all who call on Him in truth (Psalm 145:18, WEB). He is faithful and will not allow you to be tempted beyond what you can endure (1 Corinthians 10:13, WEB).
Lastly, we encourage you to seek godly counsel, perhaps from your local church or a Christian legal aid service, to ensure you are acting in accordance with the law and God's will. Keep trusting in the Lord, and He will direct your paths (Proverbs 3:5-6, WEB).