I am assigned to lead the prayer for the faithful for the alma mater. I don't know how to make a very short prayer for the alma mater. HELP!?

Please God, stop them believing in you as you are a sky fairy.

There are three main things that stand out to me as message from Him. I would find verses for them, then fill in the rest with words of your own. Praying that these are true in their lives.
1. God loves you.
2. Love God with all your heart, mind, and soul.
3. God was a plan for your life. Pray for His will to be done in your life.
https://en.wikipedia.org/wiki/Cru_(Christian_organization)

John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.[27]

John 10:10 The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.

Matthew 22:36-40 “Teacher, which is the greatest commandment in the Law?”

Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.' This is the first and greatest commandment. And the second is like it: ‘Love your neighbor as yourself.’ All the Law and the Prophets hang on these two commandments.”

I hope these help. I hope the best for you. May you message be a blessing to you and to others.