פירוש על ברכות 59:4

WHAT IS THE DIFFERENCE BETWEEN [THE PRAYER]: GRANT US UNDERSTANDING AND THE BRIEF PRAYER? This is bewildering. When the Gemara asks what difference is there between haveenainu and the short t’feeloh, the Gemara should say that the difference is that the short t’feeloh is said only in a place of danger and haveenainu may be said even in a place where there is no danger?
The Gemara already knew that. The Gemara is asking if there are any differences beyond those that we know about the danger level. And we can answer: that the questioner already assumes that we know the difference about the danger level. This is what the Gemara is asking: What is the difference between the two prayers when each one is said in its place, the short t’feeloh in a place of danger and haveenainu in a place that is not dangerous? Are there perhaps any other differences?

The abstract of the Tefillah.

Mentioned in the Mishnah.

See the directions in Singer, p. 55.