If my opponent has used Latios GX's "Clear Vision GX" attack, can I use a GX attack that ignores effects?
No, because you don't even get to start using the GX attack.
Source: Unified Minds FAQ (2019-07-19), TPCi Rules Team (2019-08-01)

Relevant cards

Note: All applicable cards may not be listed below.
SM11_223
SM11_223
SM11_243
SM11_243
SM11_78
SM11_78