You are welcome.
It is vandu + aNugAmal
vandu = to come
aNuga / aNugudal = to approach, to near something (aNmai = nearness, proximity)
aNugAmal = without approaching/ without causing to approach
Also, akkAlattilum = "at that time" (not "this time")...most probably refers to the final moments of one's life (ensure that in my final moments no distress comes to me).
I'm reminded of "appOdaikku ippOdE solli vaittEn", a popular phrase among vaishnavaites - in one's final moments it may be difficult to think of the Lord, so it makes sense to make all one's entreaties to Him (perform surrender/ SaranAgati) now itself