Informal:
* Kò sí ìṣòro (ko shee isoro): This is the most common and straightforward way to say "No problem".
* Kò dájú (ko daju): Means "It's okay" or "No worries."
* Àìsí ìṣòro (aishe isoro): Literally means "Absence of problem".
* Kò sí kankan (ko shee kankan): Means "There is nothing" or "It's nothing".
Formal:
* Ìṣòro kò sí (isoro ko shee): This is a more formal way to say "No problem".
The best way to choose the appropriate phrase depends on the situation and your relationship with the person you are speaking to.