Wuḍoo' (Ablution)
Adhān (The Call To Prayer)
Iqāmah
The Second Rak'ah (Unit Of Prayer)
The Middle Tashahhud (Testification Of Faith)
The Third And Fourth Rak'ah (Units Of Prayer)
The Final Tashahhud (Testification Of Faith)
Remembrance Of Allah After Praying
Witr Prayer
Jumu'ah (Friday Congregation)
Taraweeḥ Prayer (Optional Night Prayers During Ramaḍaan)
'Eid Prayer
Prayer For Seeking Guidance
Janāzah (Funeral Prayer)
To Say 'Ameen' After Sūrah Al-Fātiḥah (in Every Prayer)

It was narrated from Abū Hurayrah (may Allah be pleased with him) that the the Prophet (may the peace and blessings of Allah be upon him) said:

"When the Imām says Aameen, then say Aameen, for the angels say Aameen, and if a person’s Aameen coincides with the Aameen of the angels, his previous sins will be forgiven." [al-Bukhāri: 780]

To say Aameen out loud in prayers where recitation is said loudly

The companion Wā'il ibn Ḥujr (may Allah be pleased with him) said:

"When the Prophet (may the peace and blessings of Allah be upon him) recited the verse, 'Nor of those who go astray’ [Sūrah al-Fātiḥah, verse 7], he would say Aameen; raising his voice.”  [Abū Dāwood: 932]