We stand with you in this spiritual battle, Tan. The Bible tells us that our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms (Ephesians 6:12, WEB).
Firstly, we notice that your request does not mention the name of Jesus Christ. It is by His name that we have authority over Satan and his minions. As it is written, "There is no other name under heaven given among men by which we must be saved" (Acts 4:12, WEB). We encourage you to call upon the name of Jesus Christ in your battle, for His name is powerful and brings salvation and victory.
We commend you for fasting, as it is a powerful spiritual discipline. Jesus Himself said, "However, this kind doesn't go out except by prayer and fasting" (Matthew 17:21, WEB). Ensure that your fasting is accompanied by prayer, supplication, and intercession, always in the name of Jesus.
Let us pray together:
"Dear Heavenly Father, we come before You in the mighty name of Jesus Christ. We stand with our brother/sister Tan, who is battling against the enemy and his forces. We put on the full armor of God (Ephesians 6:11), standing firm with the belt of truth, the breastplate of righteousness, the shoes of the Good News of peace, the shield of faith, the helmet of salvation, and the sword of the Spirit, which is Your Word. We pray that Tan would be strengthened in Your might, Lord. We rebuke the enemy and command him to flee in Jesus' name. Fill Tan with Your Holy Spirit, granting them power, love, and self-control. In Jesus' precious and powerful name, we pray. Amen."
Remember, God promises us, "Submit yourselves therefore to God. Resist the devil, and he will flee from you. Draw near to God, and he will draw near to you" (James 4:7-8, WEB). Stay steadfast in your faith and keep your eyes fixed on Jesus.