Whenever Imam Ali (ra) faced an enemy

He invoked Allah in the following words

O Lord 
Our hearts seek Your Protection ... 
Our faces turn to You ... 
Our eyes look towards You ... 
Our feet move towards Your path ... 
And our bodies sincerely submit to Your command ...

O Lord 
Hidden hostilities 
And concealed spite 
Are exposed hearts are boiling over with envy and malice ...

O Lord 
We place before You our difficulties ...
The absence of the Holy Prophet (SAW) from amongst us ... 
The abundance of enemies
The disappointments and frustrations which face us ...

O Lord 
Let truth prevail 
And let our people realize justice, honesty and piety of our case ...