I am looking for the episode where Teal'c says something like:
and O'Neill says:
I believe this is from the Season 1 finale, titled "Within the serpent's grasp". This is either episode 22, or it is sometimes numbered as episode 21, depending on whether the double-length opener is counted as one or two episodes.
The exchange runs as:
Teal'c: If the coordinates are for a Goa'uld world which is not on the Abydos cartouche, the Goa'uld will most likely not expect us. I believe a medical attack could be successful.
Jack O'Neill: Surgical attack, Teal'c. It's called a surgical attack.