اللّهُـمَّ  إِنَّـي أَسْـأَلُـكَ خَيْـرَها، وَأَعـوذُ بِكَ مِنْ شَـرِّها.

166. Allaahumma 'innee 'as'aluka khayrahaa, wa 'a'oothu bika min sharrihaa.

O Allah , I ask You for the good of it and seek refuge in You against its evil.

Reference:
Abu Dawud 4/326, Ibn Majah 2/1228. See also Al-Albani, Sahih Ibn Mjjah 2/305

اللّهُـمَّ  إِنَّـي أَسْـأَلُـكَ خَيْـرَها، وَخَيْـرَ ما فيهـا، وَخَيْـرَ ما اُرْسِلَـتْ بِه، وَأَعـوذُ بِكَ مِنْ شَـرِّها، وَشَـرِّ ما فيهـا، وَشَـرِّ ما اُرْسِلَـتْ بِه.

167. Allaahumma 'innee 'as'aluka kthayrahaa, wa khayra maa feehaa, wa khayra maa 'ursilat bihi wa a'oothu bika min sharrihaa, wa sharri maa feehaa, wa sharri maa 'ursilat bihi.

O Allah, I ask You for the good of it, for the good of what it contains , and for the good of what is sent with it . I seek refuge in You from the evil of it , from the evil of what it contains, and from the evil that is sent with it.

Reference:
Muslim 2/616, Al-Bukhari 4/76.