Nasai

“True companion”—because other companions can leave at any time, whether in happiness or in unhappiness. “Guardian”—in Arabic, the word “khalifah” is used, which means deputy and successor. The meaning is that in my absence, You alone will suffice in my place. This meaning has been expressed with the word “guardian.”

Explanation:
1:
O Allah! You are the companion of our journey,
You are the deputy and guardian over our families whom we leave behind,
O Allah, remain with us in this journey of ours, and become our deputy and guardian among our household,
O Allah! I seek Your protection from the hardship and fatigue of travel, from the sorrow of returning unsuccessful and disappointed,
from the supplication of the oppressed, and from witnessing any evil scene (bad situation) in wealth and family.

Benefits and Issues:

➊
The meaning of a distressing return is:
That suddenly such an unforeseen situation arises that a person is compelled to return, or it means that upon returning, some unpleasant incident has already occurred at home. In the presence of the usual hardships and difficulties of travel, such a situation becomes unbearable.
Therefore, one supplicates to Allah
to be protected from this.

➋
The meaning of (al-hawr ba‘d al-kawr)
is that after a task has been properly completed, there then occurs some deficiency or corruption in it, or after a good state, one falls into a bad state—for example, disbelief after faith, sin after righteousness, and hardship and indebtedness after prosperity, etc. In this regard, these are very comprehensive words.

➌
Seeking refuge from the supplication (curse) of the oppressed means that Allah, the Exalted, grants us the ability not to wrong anyone, so that they do not supplicate against us. Therefore, if one has wronged someone, one should make amends before setting out on a journey.