While Hawaiian culture deeply values spirituality and prayer, they don't use a word directly equivalent to "amen." You could consider using:
* ʻĀmene: This is a direct transliteration of the English word "amen." While not a traditional Hawaiian word, it's understood by many Hawaiians familiar with English.
* ʻAʻohe mea hou aku: This phrase translates to "There is nothing more," and can be used as a respectful closing to a prayer or a statement of agreement.
* Eia kaʻu pule: This translates to "Here is my prayer," and functions as a way to signal the end of a prayer and to express gratitude.
Ultimately, the best way to end a prayer in Hawaiian depends on the context and your personal preference.