The fourth blessing of the weekday Amidah is called Da'at ("knowledge") and functions as a prayer for understanding from the LORD. Note that this part of the Amidah is only recited during weekdays (the Shabbat and Holiday versions skip this prayer).
Blessing Four: Da'at
You show favor to a man of knowledge, and You teach understanding to a mortal man. Be gracious to us; a mind of understanding and intellect is from You. Blessed are You, Adonai, Who favors us with knowledge.