There are several places in the selichot where there are controversial phrases, e.g. addressing prayer to angels not G-d. I'm not asking for opinions on this, but I've heard some people just skip ...
In the Selichot (fifth day of Aseret Yimei Teshuvah, HaPizmon shel Yud Gimel Middot HaRahamim) and in Ne'ila of Yom Kippur, there's the stanza that reads: The concern is the few middle lines: ...
The Rambam says if someone's virtues-vs-sins balance is even as of Rosh Hashanah, their verdict happens on yom kippur. If they did teshuva in those ten days, they get a pass; if not, they don't. ...