Reference : Hisn al-Muslim 17

اللّهُـمَّ إِنِّـي أَعـوذُ بِكَ
 أَنْ أَضِـلَّ أَوْ أُضَـل ،
 أَوْ أَزِلَّ أَوْ أُزَل ،
 أَوْ أَظْلِـمَ أَوْ أَُظْلَـم ،
 أَوْ أَجْهَلَ أَوْ يُـجْهَلَ عَلَـيّ
Allāhumma 'innī 'a`ūdhu bika 
'an 'aḍilla, 'aw 'uḍalla, 
'aw 'azilla, 'aw 'uzalla, 
'aw 'aẓlima, 'aw 'uẓlama, 
'aw 'ajhala 'aw yujhala `alayya.

O Allah, I seek refuge in You 
lest I misguide others , or I am misguided by 
others , 
lest I cause others to err or I am caused to err , 
lest I abuse others or be abused, 
and lest I behave foolishly or meet with the 
foolishness of others.

Reference:
Abu Dawud, Ibn Majah, An-Nasa'i, At-Tirmidhi. See also Al-Albani, Sahih 
At-Tirmidhi 3/152 and Sahih Ibn Majah 2/336

Chapter: Remembrance when leaving the home