Komik-M: Mission 5 Daily Solat #2: Imran's Du'a Diary

Oh man! I’m finished!​ I accidently did something at school! And ‘Bob’ is REALLY angry with me.
You don’t know who Bob is! He’s the worst thug in school… no, wait. Make that in the whole world!
Ustaz said, a Muslim’s weapon is DU’A. That’s why I must fight Bob using du’a. (I’m not going to survive a fist fight against him, NO WAY).

The PROBLEM is, I only memorise the du’a before meals. Oh man!

WHAT SHOULD I DO?