I'm really sorry to hear that you're facing such a challenging situation. Here's a prayer you can use, and I'll also keep you in my thoughts and prayers:
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Dear Heavenly Father,
I come before You today to ask for Your divine intervention in my workplace. Lord, You know that I have been helping in the cafeteria due to the staff shortage, and I'm facing difficulties with the sixth grade boys who are being rude and disrespectful towards me and other adults.
Lord Jesus, You taught us to love our neighbors and to bless those who curse us. Please fill my heart with Your love, patience, and compassion. Help me to respond with kindness and wisdom, and to see these students as You see them.
Father, I pray for a change in the hearts of these boys. May they come to know and respect the value of every person. I ask that You would soften their hearts and help them to understand the impact of their words and actions. Please bring positive influences into their lives and help them grow in maturity and kindness.
I also pray for my colleagues and me, that You would grant us the strength, patience, and grace we need to endure and overcome these challenges. Help us to be a light in the darkness, reflecting Your love to those around us.
In Jesus' name, I pray. Amen.
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Remember, God is always there to support and guide you. Keep trusting in Him, and don't hesitate to reach out to your community and superiors for additional support if needed. Stay strong, and continue to be a positive influence in their lives.