It’s going to depend on your particular translation. You might try searching for “refute”, “refuted”, “curing”, “being cured”. This is what it says in my version:
And what is my sort? you will ask. I am one of those who are very willing to be refuted if I say anything which is not true, and very willing to refute any one else who says what is not true, and quite as ready to be refuted as to refute; for I hold that this is the greater gain of the two, just as the gain is greater of being cured of a very great evil than of curing another.
It’s going to depend on your particular translation. You might try searching for “refute”, “refuted”, “curing”, “being cured”. This is what it says in my version:
And what is my sort? you will ask. I am one of those who are very willing to be refuted if I say anything which is not true, and very willing to refute any one else who says what is not true, and quite as ready to be refuted as to refute; for I hold that this is the greater gain of the two, just as the gain is greater of being cured of a very great evil than of curing another.