Reciting Kedusha during the Amidah
Question
Answer
Hello
Do not respond, and remain silent and listen to the Kedusha from the chazan.
There are several reasons for this. A. A general rule was made, and they prohibited any response during one's prayer. B. Fear of confusion. C. In "Shomea Tefila," one may only add requests, not mentions.
Source
Eshel Avraham (Butchatch) Siman 104:
Not for Kaddish. The reason one should not respond "Amen, Yehei Shmei Rabba" during the prayer, even though in "Shomea Tefila" requests are added, is due to the general rule made by the Rabbis. Also, some say not to add requests for the many, thus it is also correct not to respond "Amen, Yehei Shmei Rabba" due to confusion, and because of the general rule not to respond even when adding requests for the many in "Shomea Tefila":