Hello brother,
Katha Bucha Rahul is as below;
Namome Phra Rahul Dhevanang DhupaDheepa
Japoopphang Sakkarawantanang Supaphayanchana
Sampannang Phochananang Saleenang Sapariwarang
Uhdhakangwarang
Ahkajchantu Pariboonchantu Sappata Hitaya Sukaya
Phra Rahul Dheva mahitthika Thepi Amhe Ahnurakkhantu
Ahrohkayena Sukhemaja