Shalom, The prayer is called 'Kriat Shma Al Hamita' (Bed time Sh'ma) which is read right before one goes to sleep and can be found on most prayer books. First I would suggest to watch these two lectures where I explain a lot of details about this prayer. Firat lecture: Atzmut.com/how-to-fix-karet-shma-al-hamita Second lecture: Atzmut.com/kriyat-shma-al-hamita-prayer-retiring-night I would suggest to get the prayer book according to the text of the Ha-Ari Zal (Rabbi Isaac Luria) as his text has all the prayers that I mentioned. The prayer book can be purchased on this website kehotonline.com/products Anyone of the options are good, as long as you understand what you read. Please note that I am not associated or affiliated with this website in anyway All the best, Rabbi Alon Anava