In the Shacharit (Morning) service, the Kedushah prayer is slightly different. While other rites have expanded, poetic versions ( Kedushah d’Yotzer ), the Roman rite tends to retain a shorter, more ancient structure. Furthermore, during the silent Amidah , the concluding blessings ( Modim and Sim Shalom ) follow an order that reflects the lost liturgy of the Land of Israel.
Under the auspices of Rabbi Elio Toaff (the former Chief Rabbi of Rome), critical editions of the Minhag Roma were published, though they were often expensive and rare. The Machzor Roma for the High Holidays remains a treasure for collectors. siddur bene romi