When you think of a helmet, what comes to mind as the thing you are trying to protect? The Helmet of Salvation seems to protect our minds, eyes, ears, and mouth.
The Prayer:
Father, I take the helmet of salvation. I want to think your thoughts after you and take every other thought captive. Give me your eyes that I might see with an eternal perspective. I choose to speak your word to myself and to others. Give me ears to hear what you are saying to me and to your people. I will think and meditate on You- and on whatever is noble, just, pure, lovely, of good report; Lord you are all these and you are virtuous and worthy of praise.