\version "2.11.36"
#(ly:set-option 'point-and-click #f)

\header {
  title = "Which engraver creates the \fermataMarkup on the R1?"
}

mI = \relative c'' { R1-\fermataMarkup | c4\p d\accent c^"Text 1" d\fermata }
mII = \relative c'' { R1-\fermataMarkup | g4\p a\accent b_"Text 2" d_\fermata }

fermataMarkup = \markup \null
\context Score \with { \override CombineTextScript #'avoid-slur = #'outside } {
\context StaffGroup <<
  \context Staff = "both" << 
    \context Voice = "v1" << {\voiceOne \mI} >>
    \context Voice = "v2" \with { 
          \remove "Dynamic_engraver" 
          \remove "Text_engraver" 
          \remove "Script_engraver"
          \remove "Mark_engraver"
    } 
    << {\voiceTwo \mII} >>
  >>
  \context Staff = "first" << 
    \context Voice = "vstaff1" << {\mI} >>
  >>
  \context Staff = "second" << 
    \context Voice = "vstaff2" << {\mII} >>
  >>
>>
}