What is the test for making out a discrimination claim based on opposition to unlawful employment practice?

There are only certain specific scenarios for which plaintiff may state a claim. "In order to make out a prima facie case of discrimination based on opposition to an unlawful employment practice under 704(a), [plaintiff] must show that (1) he engaged in a statutorily protected activity (i.e., that he protested or otherwise opposed unlawful employment discrimination directed against employees protected by Title VII); (2) subsequently, he was disciplined or lost his job; and (3) a causal link exists between the protected activity and the adverse action." Moyo v. Gomez, 32 F.3d 1382, 1384 (9th Cir. 1994).