2syun jeung 算帳 — to make peace, to settle accounts, to make up (dhlk 209, 6).
3syun laa 算啦 — used to conciliate, to urge acceptance of a bad situation, or to bring a situation to an end, "forget it!"; "never mind!"; "that's enough for now!".
4syun neih hou choi 算你好彩 — used at the end of a confrontation, when for example the stronger party lets the weaker go, or the stronger party is unable to carry out a threat because of an unforeseen factor, e.g. the arrival of the police, "count yourself lucky this time!".