In the Name of Allah we enter, in the Name of Allah we leave, and upon our Lord we depend [then say ...
Reference:Abu Dawud 4/325. Muslim {Hadith no. 2018) says that one should mention the Name of Allah when entering the home and when beginning to eat; and that the devil, hearing this, says: "There is no shelter for us here tonight and no food."Hisnul Muslim 18
بِسْـمِ اللهِ وَلَجْنـا وَبِسْـمِ اللهِ خَـرَجْنـا وَعَلـى رَبِّنـا تَوَكّلْـن (ثم ليسلم على أهله.)
Bismillāhi walajnā. wa bismillāhi kharajnā. wa `ala Rabbinā tawakkalnā
In the Name of Allah we enter, in the Name of Allah we leave, and upon our Lord we depend [then say As-Salāmu `Alaykum to those present].