Wazifah for protection from oppression

Q: My son keeps getting picked on by teachers in school especially the year head. The people around him blame him for doing things that he doesn't do and the teacher shouts at him. My son doesn't speak at all.

This week, an English boy told the teacher that my son swore at him and he didn't, the teacher doesn't believe him. Please give us a wazifa to pray.

Wearing one's ihraam before boarding a plane

Q: I will be flying from London for ummrah Insha Allah, but I don't want to wear ihraam from London on the plane because we have to use the plane toilets and I dont think we will stay clean as the toilets are very small and dirty. If I go to Makkah and I wear my ihraam at Masjid-e-Ayesha with the intention of doing umrah the next day, is that permissible? Or do I have to wear ihram in the plane or from London? Please advise.