Fiqh-us-Sunnah Volume 4, Funerals and Dhikr, Fiqh 4.144A.

It is preferred for a traveller to say when leaving home, “Bismillahi tawakaltu ‘alallah wa la haula wala quwwata illa billah, Allahumma inni auzhu bika an adilla au udalla au azilla au uzalla au azlima au uzlama au aj-hala au yuj-hala ‘alayya (In the name of Allah, I repose my trust in Allah, and there is neither power nor any might except with Allah. O Allah, I seek refuge with You from leading others astray or being led astray, causing others to slip or being caused to slip by others, or doing wrong or be wronged by others, or behaving foolishly or being treated foolishly by others).” The traveller may choose whatever he wants from the supplications reported from the Prophet, peace be upon him. Some of these supplications are given below.

Ibn ‘Abbas reported that when the Prophet, peace be upon him, proceeded on journey, he would say, “O Allah, You are the Companion in the journey, and the One Who looks after the family. O Allah, I seek refuge in You from worthless companions on the journey, and from finding harm when I return, O Allah, make the length of the journey short for us, and the journey easy for us.” And when he returned he would say, “We are returning repentant, worshipping our Lord and praising Him.” And when he went to his family he would say, “Repentant, repentant, we return to our Lord, the sin visits us not.” (Reported by Ahmad, At-Tabarani, and Al-Bazar with a sound chain of authorities)

Abdullah ibn Sarjis reported that when Allah’s Messenger, may peace be upon him, set forth on a journey, he would say, “O Allah, I seek refuge (with You) from the hardships of the journey and finding evil changes on my return, and disgrace after honour, and the curse of the oppressed, and a sad disarray in my property and family.” And when he returned he would use similar words, except that he would mention his family before his property, and would say “… a sad disarray in my family and property.’ (Ahmad and Muslim)