Wa `Alaykumus Salaam wa Rahmatullaahi wa Barakaatuh. Just some minor corrections, brother: "Ahl-us-Sunnati wal Jamaa`ati." Ahl (Meaning people) is a Mudaaf in the state of Marfoo`, therefore it is "Ahlu". It is not "Ahlun" as a Mudaaf can never have "Al" or "Tanween" (Fathatain, Dammatain, Kasratain.) Then, "As-Sunnati" is the Mudaaf Ilayhi of "Ahlu", so it will have "Al" (which becomes "As", because Seen is from al-Huroof ash-Shamsiyyah), and it will be "Sunnati" because the Mudaaf Ilayhi will always be Majroor. Then, "Wa" is Harf-ul-Atf, and "Al-Jamaa`ati" is Ma`toof `Alayhi, and so will have the same I`raab as "As-Sunnati". And the meaning is, "The People (or Followers) of the Sunnah (of Rasoolullaah Sallallaahu `Alayhi wa Sallam) and the Jamaa`ah (which refers to the Sahaabah, Taabi`een and Atbaa`-ut-Taabi`een, known as the Khayr-ul-Quroon.) Wa Sallallaahu `Alaa Nabiyyinaa Muhammadiw wa Aalihi wa Sahbihi wa Sallim.