Dua 223 ☆
اللهُ أَكْـبَر / سُبْـحانَ الله
Allaahu 'Akbar / Subhaanallaah
Jabir (RA), said: Whenever we went up a hill we would say Allaahu 'Akbar (Allah is the Most Great) and when we descended we would say Subhaanallaah (Glory is to Allah).
Reference: Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 6/135.