For each extra takbeer
Repeat with the imam ×3ٱللَّٰهُ أَكْبَرُ
Allahu Akbar
Allah is the Greatest.
Pause with the imam between takbeers. There is no additional fixed phrase required here.

After the imam finishes recitation, follow him in three extra takbeers.
Position
Raise hands for each Allahu Akbar. Lower arms to your sides after each of the three.
ٱللَّٰهُ أَكْبَرُ
Allahu Akbar
Allah is the Greatest.
Pause with the imam between takbeers. There is no additional fixed phrase required here.
Allah is greater than everything. I worship Him and follow the imam calmly.