Ibn Abbas (RA) said:

اَللَّهُ أَكْبَرُ، اَللَّهُ أَكْبَرُ، اَللَّهُ أَكْبَرُ، وَلِلَّهِ الْحَمْدُ، اَللَّهُ أَكْبَرُ وَأَجَلُّ، اَللَّهُ أَكْبَرُ عَلىَ مَا هَدَانَا

Allaahu akbar, Allaahu akbar, Allaahu akbar, wa lillaahil hamd, allaahu akbar wa ajall, allaahu akbar 'alaa maa hadaana.

Allah is great. Allah is great. Allah is great. All praise is due to Allah. Allah is great and Most High. Allah is great because He has guided us.

Reference: Irwa'ul-Ghalil, Albani: 3/125